diff --git a/src/Exception/ExceptionInterface.php b/src/Exception/ExceptionInterface.php
new file mode 100644
index 0000000..40a4326
--- /dev/null
+++ b/src/Exception/ExceptionInterface.php
@@ -0,0 +1,14 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Exception;
+
+interface ExceptionInterface
+{
+}
diff --git a/src/Exception/ExistingNodeException.php b/src/Exception/ExistingNodeException.php
new file mode 100644
index 0000000..890e66b
--- /dev/null
+++ b/src/Exception/ExistingNodeException.php
@@ -0,0 +1,52 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Exception;
+
+use Exception;
+use OutOfBoundsException;
+use Vfs\Node\NodeContainerInterface;
+
+class ExistingNodeException extends OutOfBoundsException implements ExceptionInterface
+{
+    protected $container;
+    protected $name;
+
+    /**
+     * @param string $name
+     * @param NodeContainerInterface $container
+     * @param integer $code
+     * @param Exception $previous
+     */
+    public function __construct($name, NodeContainerInterface $container, $code = 0, Exception $previous = null)
+    {
+        $this->container = $container;
+        $this->name = $name;
+
+        $message = sprintf('Node with name "%s" already exists in container.', $name);
+
+        parent::__construct($message, $code, $previous);
+    }
+
+    /**
+     * @return NodeContainerInterface
+     */
+    public function getContainer()
+    {
+        return $this->container;
+    }
+
+    /**
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+}
diff --git a/src/Exception/MissingNodeException.php b/src/Exception/MissingNodeException.php
new file mode 100644
index 0000000..7d342cd
--- /dev/null
+++ b/src/Exception/MissingNodeException.php
@@ -0,0 +1,52 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Exception;
+
+use Exception;
+use OutOfRangeException;
+use Vfs\Node\NodeContainerInterface;
+
+class MissingNodeException extends OutOfRangeException implements ExceptionInterface
+{
+    protected $container;
+    protected $name;
+
+    /**
+     * @param string $name
+     * @param NodeContainerInterface $container
+     * @param integer $code
+     * @param Exception $previous
+     */
+    public function __construct($name, NodeContainerInterface $container, $code = 0, Exception $previous = null)
+    {
+        $this->container = $container;
+        $this->name = $name;
+
+        $message = sprintf('Node with name "%s" doesn\'t exist in container.', $name);
+
+        parent::__construct($message, $code, $previous);
+    }
+
+    /**
+     * @return NodeContainerInterface
+     */
+    public function getContainer()
+    {
+        return $this->container;
+    }
+
+    /**
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+}
diff --git a/src/Exception/RegisteredSchemeException.php b/src/Exception/RegisteredSchemeException.php
new file mode 100644
index 0000000..2246509
--- /dev/null
+++ b/src/Exception/RegisteredSchemeException.php
@@ -0,0 +1,40 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Exception;
+
+use Exception;
+use OutOfBoundsException;
+
+class RegisteredSchemeException extends OutOfBoundsException implements ExceptionInterface
+{
+    protected $scheme;
+
+    /**
+     * @param string $scheme
+     * @param integer $code
+     * @param Exception $previous
+     */
+    public function __construct($scheme, $code = 0, Exception $previous = null)
+    {
+        $this->scheme = $scheme;
+
+        $message = sprintf('File system with scheme "%s" has already been registered.', $scheme);
+
+        parent::__construct($message, $code, $previous);
+    }
+
+    /**
+     * @return string
+     */
+    public function getScheme()
+    {
+        return $this->scheme;
+    }
+}
diff --git a/src/Exception/UnopenedHandleException.php b/src/Exception/UnopenedHandleException.php
new file mode 100644
index 0000000..59b5c8a
--- /dev/null
+++ b/src/Exception/UnopenedHandleException.php
@@ -0,0 +1,52 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Exception;
+
+use Exception;
+use RuntimeException;
+use Vfs\Stream\HandleInterface;
+
+class UnopenedHandleException extends RuntimeException implements ExceptionInterface
+{
+    protected $handle;
+    protected $url;
+
+    /**
+     * @param HandleInterface $handle
+     * @param string $url
+     * @param integer $code
+     * @param Exception $previous
+     */
+    public function __construct(HandleInterface $handle, $url, $code = 0, Exception $previous = null)
+    {
+        $this->handle = $handle;
+        $this->url = $url;
+
+        $message = sprintf('Handle at url "%s" hasn\'t been opened.', $url);
+
+        parent::__construct($message, $code, $previous);
+    }
+
+    /**
+     * @return HandleInterface
+     */
+    public function getHandle()
+    {
+        return $this->handle;
+    }
+
+    /**
+     * @return string
+     */
+    public function getUrl()
+    {
+        return $this->url;
+    }
+}
diff --git a/src/Exception/UnregisteredSchemeException.php b/src/Exception/UnregisteredSchemeException.php
new file mode 100644
index 0000000..7c8d097
--- /dev/null
+++ b/src/Exception/UnregisteredSchemeException.php
@@ -0,0 +1,40 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Exception;
+
+use Exception;
+use OutOfRangeException;
+
+class UnregisteredSchemeException extends OutOfRangeException implements ExceptionInterface
+{
+    protected $scheme;
+
+    /**
+     * @param string $scheme
+     * @param integer $code
+     * @param Exception $previous
+     */
+    public function __construct($scheme, $code = 0, Exception $previous = null)
+    {
+        $this->scheme = $scheme;
+
+        $message = sprintf('File system with scheme "%s" has not been registered.', $scheme);
+
+        parent::__construct($message, $code, $previous);
+    }
+
+    /**
+     * @return string
+     */
+    public function getScheme()
+    {
+        return $this->scheme;
+    }
+}
diff --git a/src/FileSystem.php b/src/FileSystem.php
new file mode 100644
index 0000000..eb95e09
--- /dev/null
+++ b/src/FileSystem.php
@@ -0,0 +1,149 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs;
+
+use Psr\Log\LoggerInterface;
+use Vfs\Exception\RegisteredSchemeException;
+use Vfs\Exception\UnregisteredSchemeException;
+use Vfs\Node\Factory\NodeFactoryInterface;
+use Vfs\Node\Walker\NodeWalkerInterface;
+
+class FileSystem implements FileSystemInterface
+{
+    protected $factory;
+    protected $registry;
+    protected $logger;
+    protected $scheme;
+    protected $walker;
+    protected $wrapperClass;
+
+    /**
+     * @param string $scheme
+     * @param string $wrapperClass
+     * @param NodeFactoryInterface $factory
+     * @param NodeWalkerInterface $walker
+     * @param RegistryInterface $registry
+     * @param LoggerInterface $logger
+     */
+    public function __construct(
+        $scheme,
+        $wrapperClass,
+        NodeFactoryInterface $factory,
+        NodeWalkerInterface $walker,
+        RegistryInterface $registry,
+        LoggerInterface $logger
+    ) {
+        $this->wrapperClass = $wrapperClass;
+        $this->scheme = $this->formatScheme($scheme);
+        $this->walker = $walker;
+        $this->logger = $logger;
+        $this->factory = $factory;
+        $this->registry = $registry;
+
+        $this->root = $factory->buildDirectory();
+    }
+
+    /**
+     * @param string $scheme
+     * @return FileSystem
+     */
+    public static function factory($scheme = self::SCHEME)
+    {
+        $builder = new FileSystemBuilder($scheme);
+
+        $fs = $builder->build();
+        $fs->mount();
+
+        return $fs;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function get($path)
+    {
+        return $this->walker->findNode($this->root, $path);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getLogger()
+    {
+        return $this->logger;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getNodeFactory()
+    {
+        return $this->factory;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getNodeWalker()
+    {
+        return $this->walker;
+    }
+
+    /**
+     * @return string
+     */
+    public function getScheme()
+    {
+        return $this->scheme;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function mount()
+    {
+        if ($this->registry->has($this->scheme) || in_array($this->scheme, stream_get_wrappers())) {
+            throw new RegisteredSchemeException($this->scheme);
+        }
+
+        if (stream_wrapper_register($this->scheme, $this->wrapperClass)) {
+            $this->registry->add($this->scheme, $this);
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function unmount()
+    {
+        if (!$this->registry->has($this->scheme) && !in_array($this->scheme, stream_get_wrappers())) {
+            throw new UnregisteredSchemeException($this->scheme);
+        }
+
+        if (stream_wrapper_unregister($this->scheme)) {
+            $this->registry->remove($this->scheme, $this);
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * @param string $scheme
+     * @return string
+     */
+    protected function formatScheme($scheme)
+    {
+        return rtrim($scheme, ':/\\');
+    }
+}
diff --git a/src/FileSystemBuilder.php b/src/FileSystemBuilder.php
new file mode 100644
index 0000000..8ecea02
--- /dev/null
+++ b/src/FileSystemBuilder.php
@@ -0,0 +1,232 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs;
+
+use Psr\Log\LoggerInterface;
+use Vfs\Logger\PhpErrorLogger;
+use Vfs\Node\Factory\NodeFactory;
+use Vfs\Node\Factory\NodeFactoryInterface;
+use Vfs\Node\Walker\NodeWalker;
+use Vfs\Node\Walker\NodeWalkerInterface;
+
+class FileSystemBuilder
+{
+    protected $factory;
+    protected $registry;
+    protected $logger;
+    protected $scheme;
+    protected $walker;
+    protected $wrapperClass;
+    protected $tree = [];
+
+    /**
+     * @param string $scheme
+     */
+    public function __construct($scheme = FileSystemInterface::SCHEME)
+    {
+        $this->setScheme($scheme);
+    }
+
+    /**
+     * @return FileSystemInterface
+     */
+    public function build()
+    {
+        $fs = new FileSystem(
+            $this->getScheme(),
+            $this->getStreamWrapper() ?: $this->buildDefaultStreamWrapper(),
+            $this->getNodeFactory() ?: $this->buildDefaultNodeFactory(),
+            $this->getNodeWalker() ?: $this->buildDefaultNodeWalker(),
+            $this->getRegistry() ?: $this->buildDefaultRegistry(),
+            $this->getLogger() ?: $this->buildDefaultLogger()
+        );
+
+        $root = $fs->get('/');
+        $factory = $fs->getNodeFactory();
+        foreach ($factory->buildTree($this->getTree()) as $name => $node) {
+            $root->set($name, $node);
+        }
+
+        return $fs;
+    }
+
+    /**
+     * @return LoggerInterface
+     */
+    public function getLogger()
+    {
+        return $this->logger;
+    }
+
+    /**
+     * @param LoggerInterface $logger
+     * @return FileSystemBuilder
+     */
+    public function setLogger(LoggerInterface $logger)
+    {
+        $this->logger = $logger;
+
+        return $this;
+    }
+
+    /**
+     * @return NodeFactoryInterface
+     */
+    public function getNodeFactory()
+    {
+        return $this->factory;
+    }
+
+    /**
+     * @param NodeFactoryInterface $factory
+     * @return FileSystemBuilder
+     */
+    public function setNodeFactory(NodeFactoryInterface $factory)
+    {
+        $this->factory = $factory;
+
+        return $this;
+    }
+
+    /**
+     * @return NodeWalkerInterface
+     */
+    public function getNodeWalker()
+    {
+        return $this->walker;
+    }
+
+    /**
+     * @param NodeWalkerInterface $walker
+     * @return FileSystemBuilder
+     */
+    public function setNodeWalker(NodeWalkerInterface $walker)
+    {
+        $this->walker = $walker;
+
+        return $this;
+    }
+
+    /**
+     * @return RegistryInterface
+     */
+    public function getRegistry()
+    {
+        return $this->registry;
+    }
+
+    /**
+     * @param RegistryInterface $registry
+     * @return FileSystemBuilder
+     */
+    public function setRegistry(RegistryInterface $registry)
+    {
+        $this->registry = $registry;
+
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getScheme()
+    {
+        return $this->scheme;
+    }
+
+    /**
+     * @param string $scheme
+     * @return FileSystemBuilder
+     */
+    public function setScheme($scheme)
+    {
+        $this->scheme = $scheme;
+
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getStreamWrapper()
+    {
+        return $this->wrapperClass;
+    }
+
+    /**
+     * @param string $class
+     * @return FileSystemBuilder
+     */
+    public function setStreamWrapper($class)
+    {
+        $this->wrapperClass = $class;
+
+        return $this;
+    }
+
+    /**
+     * @return array
+     */
+    public function getTree()
+    {
+        return $this->tree;
+    }
+
+    /**
+     * @param array $tree
+     * @return FileSystemBuilder
+     */
+    public function setTree($tree)
+    {
+        $this->tree = $tree;
+
+        return $this;
+    }
+
+    /**
+     * @return LoggerInterface
+     */
+    protected function buildDefaultLogger()
+    {
+        return new PhpErrorLogger();
+    }
+
+    /**
+     * @return NodeFactoryInterface
+     */
+    protected function buildDefaultNodeFactory()
+    {
+        return new NodeFactory();
+    }
+
+    /**
+     * @return NodeWalkerInterface
+     */
+    protected function buildDefaultNodeWalker()
+    {
+        return new NodeWalker();
+    }
+
+    /**
+     * @return RegistryInterface
+     */
+    protected function buildDefaultRegistry()
+    {
+        return FileSystemRegistry::getInstance();
+    }
+
+    /**
+     * @return string
+     */
+    protected function buildDefaultStreamWrapper()
+    {
+        return 'Vfs\\Stream\\StreamWrapper';
+    }
+}
diff --git a/src/FileSystemInterface.php b/src/FileSystemInterface.php
new file mode 100644
index 0000000..10729ae
--- /dev/null
+++ b/src/FileSystemInterface.php
@@ -0,0 +1,60 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs;
+
+use Psr\Log\LoggerInterface;
+use Vfs\Exception\RegisteredSchemeException;
+use Vfs\Exception\UnregisteredSchemeException;
+use Vfs\Node\Factory\NodeFactoryInterface;
+use Vfs\Node\Walker\NodeWalkerInterface;
+use Vfs\Node\NodeInterface;
+
+interface FileSystemInterface
+{
+    const SCHEME = 'vfs';
+
+    /**
+     * @param $path
+     * @return NodeInterface
+     */
+    public function get($path);
+
+    /**
+     * @return LoggerInterface
+     */
+    public function getLogger();
+
+    /**
+     * @return NodeFactoryInterface
+     */
+    public function getNodeFactory();
+
+    /**
+     * @return NodeWalkerInterface
+     */
+    public function getNodeWalker();
+
+    /**
+     * @return string
+     */
+    public function getScheme();
+
+    /**
+     * @return boolean
+     * @throws RegisteredSchemeException If a mounted file system exists at scheme
+     */
+    public function mount();
+
+    /**
+     * @return boolean
+     * @throws UnregisteredSchemeException If a mounted file system doesn't exist at scheme
+     */
+    public function unmount();
+}
diff --git a/src/FileSystemRegistry.php b/src/FileSystemRegistry.php
new file mode 100644
index 0000000..7541fb2
--- /dev/null
+++ b/src/FileSystemRegistry.php
@@ -0,0 +1,85 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs;
+
+use Vfs\Exception\RegisteredSchemeException;
+use Vfs\Exception\UnregisteredSchemeException;
+
+class FileSystemRegistry implements RegistryInterface
+{
+    protected static $instance;
+    protected $registered = [];
+
+    /**
+     * @param FileSystemRegistry[] $fss
+     */
+    public function __construct(array $fss = [])
+    {
+        foreach ($fss as $name => $fs) {
+            $this->add($name, $fs);
+        }
+    }
+
+    /**
+     * @return FileSystemRegistry
+     */
+    public static function getInstance()
+    {
+        if (!self::$instance) {
+            self::$instance = new self();
+        }
+
+        return self::$instance;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function add($scheme, FileSystemInterface $fs)
+    {
+        if ($this->has($scheme)) {
+            throw new RegisteredSchemeException($scheme);
+        }
+
+        $this->registered[$scheme] = $fs;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function get($scheme)
+    {
+        if (!$this->has($scheme)) {
+            throw new UnregisteredSchemeException($scheme);
+        }
+
+        return $this->registered[$scheme];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function has($scheme)
+    {
+        return isset($this->registered[$scheme]);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function remove($scheme)
+    {
+        if (!$this->has($scheme)) {
+            throw new UnregisteredSchemeException($scheme);
+        }
+
+        unset($this->registered[$scheme]);
+    }
+}
diff --git a/src/Logger/PhpErrorLogger.php b/src/Logger/PhpErrorLogger.php
new file mode 100644
index 0000000..f63346a
--- /dev/null
+++ b/src/Logger/PhpErrorLogger.php
@@ -0,0 +1,70 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Logger;
+
+use Psr\Log\AbstractLogger;
+use Psr\Log\LogLevel;
+
+class PhpErrorLogger extends AbstractLogger
+{
+    /**
+     * @param mixed $level
+     * @param string $message
+     * @param array $context
+     */
+    public function log($level, $message, array $context = [])
+    {
+        switch ($level) {
+            case LogLevel::EMERGENCY:
+            case LogLevel::ALERT:
+            case LogLevel::CRITICAL:
+            case LogLevel::ERROR:
+                trigger_error($this->format($message, $context), E_USER_ERROR);
+                break;
+            case LogLevel::WARNING:
+                trigger_error($this->format($message, $context), E_USER_WARNING);
+                break;
+            case LogLevel::NOTICE:
+            case LogLevel::INFO:
+            case LogLevel::DEBUG:
+                trigger_error($this->format($message, $context), E_USER_NOTICE);
+                break;
+        }
+    }
+
+    /**
+     * @param string $message
+     * @param array $context
+     * @return string
+     */
+    protected function format($message, array $context)
+    {
+        foreach ($context as $key => $value) {
+            $message = str_replace(sprintf('{%s}', $key), $value, $message);
+        }
+
+        return $message . $this->formatTrace(debug_backtrace(false));
+    }
+
+    /**
+     * @param array $backtrace
+     * @return string
+     */
+    protected function formatTrace(array $backtrace)
+    {
+        $index = min((count($backtrace) + 1), 6);
+        $origin = $backtrace[$index];
+
+        $file = isset($origin['file']) ? $origin['file'] : 'unknown';
+        $line = isset($origin['line']) ? $origin['line'] : 0;
+
+        return sprintf(' in %s on line %d; triggered', $file, $line);
+    }
+}
diff --git a/src/Node/Directory.php b/src/Node/Directory.php
new file mode 100644
index 0000000..9efa9a5
--- /dev/null
+++ b/src/Node/Directory.php
@@ -0,0 +1,158 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Node;
+
+use ArrayIterator;
+use DateTime;
+use Vfs\Exception\ExistingNodeException;
+use Vfs\Exception\MissingNodeException;
+
+class Directory implements NodeContainerInterface
+{
+    const DOT_SELF = '.';
+    const DOT_UP   = '..';
+
+    protected $dateAccessed;
+    protected $dateCreated;
+    protected $dateModified;
+    protected $mode;
+    protected $nodes = [];
+
+    /**
+     * @param NodeInterface[] $nodes
+     */
+    public function __construct(array $nodes = [])
+    {
+        $this->mode = self::TYPE_BLOCK | self::TYPE_DIR;
+
+        $this->dateAccessed = new DateTime();
+        $this->dateCreated  = new DateTime();
+        $this->dateModified = new DateTime();
+
+        foreach ($nodes as $name => $node) {
+            $this->add($name, $node);
+        }
+
+        $this->set(self::DOT_SELF, $this);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function add($name, NodeInterface $node)
+    {
+        if ($this->has($name)) {
+            throw new ExistingNodeException($name, $this);
+        }
+
+        $this->set($name, $node);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function get($name)
+    {
+        if (!$this->has($name)) {
+            throw new MissingNodeException($name, $this);
+        }
+
+        return $this->nodes[$name];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function has($name)
+    {
+        return isset($this->nodes[$name]);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function remove($name)
+    {
+        if (!$this->has($name)) {
+            throw new MissingNodeException($name, $this);
+        }
+
+        unset($this->nodes[$name]);
+    }
+
+    /**
+     * @param string $name
+     * @param NodeInterface $node
+     */
+    public function set($name, NodeInterface $node)
+    {
+        $this->nodes[$name] = $node;
+
+        if (self::DOT_UP !== $name && $node instanceof NodeContainerInterface) {
+            $node->set(self::DOT_UP, $this);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getDateAccessed()
+    {
+        return $this->dateAccessed;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getDateCreated()
+    {
+        return $this->dateCreated;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getDateModified()
+    {
+        return $this->dateModified;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getIterator()
+    {
+        return new ArrayIterator($this->nodes);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getMode()
+    {
+        return $this->mode;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getSize()
+    {
+        $size = 0;
+
+        foreach ($this->nodes as $name => $node) {
+            if (!in_array($name, [self::DOT_SELF, self::DOT_UP])) {
+                $size += $node->getSize();
+            }
+        }
+
+        return $size;
+    }
+}
diff --git a/src/Node/Factory/NodeFactory.php b/src/Node/Factory/NodeFactory.php
new file mode 100644
index 0000000..26a5a5d
--- /dev/null
+++ b/src/Node/Factory/NodeFactory.php
@@ -0,0 +1,65 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Node\Factory;
+
+use LogicException;
+use Vfs\Node\Directory;
+use Vfs\Node\File;
+use Vfs\Node\NodeContainerInterface;
+use Vfs\Node\NodeInterface;
+
+class NodeFactory implements NodeFactoryInterface
+{
+    /**
+     * @param NodeInterface[] $children
+     * @return NodeContainerInterface
+     */
+    public function buildDirectory(array $children = [])
+    {
+        return new Directory($children);
+    }
+
+    /**
+     * @param string $content
+     * @return NodeInterface
+     */
+    public function buildFile($content = '')
+    {
+        return new File($content);
+    }
+
+    /**
+     * @param string $content
+     * @return NodeInterface
+     */
+    public function buildLink($content = '')
+    {
+        throw new LogicException('Symlinks aren\'t supported yet.');
+    }
+
+    /**
+     * @param array $tree
+     * @return NodeContainerInterface
+     */
+    public function buildTree(array $tree)
+    {
+        $nodes = [];
+
+        foreach ($tree as $name => $content) {
+            if (is_array($content)) {
+                $nodes[$name] = $this->buildTree($content);
+            } else {
+                $nodes[$name] = $this->buildFile($content);
+            }
+        }
+
+        return $this->buildDirectory($nodes);
+    }
+}
diff --git a/src/Node/Factory/NodeFactoryInterface.php b/src/Node/Factory/NodeFactoryInterface.php
new file mode 100644
index 0000000..a74ac99
--- /dev/null
+++ b/src/Node/Factory/NodeFactoryInterface.php
@@ -0,0 +1,34 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Node\Factory;
+
+use Vfs\Node\NodeContainerInterface;
+use Vfs\Node\NodeInterface;
+
+interface NodeFactoryInterface
+{
+    /**
+     * @param NodeInterface[] $children
+     * @return NodeContainerInterface
+     */
+    public function buildDirectory(array $children = []);
+
+    /**
+     * @param string $content
+     * @return NodeInterface
+     */
+    public function buildFile($content = '');
+
+    /**
+     * @param string $content
+     * @return NodeInterface
+     */
+    public function buildLink($content = '');
+}
diff --git a/src/Node/File.php b/src/Node/File.php
new file mode 100644
index 0000000..d502314
--- /dev/null
+++ b/src/Node/File.php
@@ -0,0 +1,98 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Node;
+
+use DateTime;
+
+class File implements FileInterface
+{
+    protected $dateAccessed;
+    protected $dateCreated;
+    protected $dateModified;
+    protected $content;
+    protected $mode;
+
+    /**
+     * @param string $content
+     */
+    public function __construct($content = '')
+    {
+        $this->content = (string) $content;
+        $this->mode = self::TYPE_BLOCK | self::TYPE_FILE;
+
+        $this->dateAccessed = new DateTime();
+        $this->dateCreated  = new DateTime();
+        $this->dateModified = new DateTime();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getContent()
+    {
+        return $this->content;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function setContent($content)
+    {
+        $this->content = (string) $content;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getDateAccessed()
+    {
+        return $this->dateAccessed;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getDateCreated()
+    {
+        return $this->dateCreated;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getDateModified()
+    {
+        return $this->dateModified;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getMode()
+    {
+        return $this->mode;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getSize()
+    {
+        return strlen($this->content);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __toString()
+    {
+        return $this->content;
+    }
+}
diff --git a/src/Node/FileInterface.php b/src/Node/FileInterface.php
new file mode 100644
index 0000000..6b38868
--- /dev/null
+++ b/src/Node/FileInterface.php
@@ -0,0 +1,28 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Node;
+
+interface FileInterface extends NodeInterface
+{
+    /**
+     * @return string
+     */
+    public function getContent();
+
+    /**
+     * @param string $content
+     */
+    public function setContent($content);
+
+    /**
+     * @return string The file content
+     */
+    public function __toString();
+}
diff --git a/src/Node/LinkInterface.php b/src/Node/LinkInterface.php
new file mode 100644
index 0000000..762493e
--- /dev/null
+++ b/src/Node/LinkInterface.php
@@ -0,0 +1,18 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Node;
+
+interface LinkInterface extends NodeInterface
+{
+    /**
+     * @return NodeInterface
+     */
+    public function getTarget();
+}
diff --git a/src/Node/NodeContainerInterface.php b/src/Node/NodeContainerInterface.php
new file mode 100644
index 0000000..584ea98
--- /dev/null
+++ b/src/Node/NodeContainerInterface.php
@@ -0,0 +1,49 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Node;
+
+use DateTime;
+use IteratorAggregate;
+use Vfs\Exception\ExistingNodeException;
+use Vfs\Exception\MissingNodeException;
+
+interface NodeContainerInterface extends NodeInterface, IteratorAggregate
+{
+    /**
+     * @param string $name
+     * @param NodeInterface $node
+     * @throws ExistingNodeException If a node exists in container with name
+     */
+    public function add($name, NodeInterface $node);
+
+    /**
+     * @param string $name
+     * @throws MissingNodeException If a node doesn't exist in container with name
+     */
+    public function get($name);
+
+    /**
+     * @param string $name
+     * @return boolean
+     */
+    public function has($name);
+
+    /**
+     * @param string $name
+     * @throws MissingNodeException If a node doesn't exist in container with name
+     */
+    public function remove($name);
+
+    /**
+     * @param string $name
+     * @param NodeInterface $node
+     */
+    public function set($name, NodeInterface $node);
+}
diff --git a/src/Node/NodeInterface.php b/src/Node/NodeInterface.php
new file mode 100644
index 0000000..c6be255
--- /dev/null
+++ b/src/Node/NodeInterface.php
@@ -0,0 +1,35 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Node;
+
+use DateTime;
+
+interface NodeInterface extends StatInterface
+{
+    /**
+     * @return DateTime
+     */
+    public function getDateAccessed();
+
+    /**
+     * @return DateTime
+     */
+    public function getDateCreated();
+
+    /**
+     * @return DateTime
+     */
+    public function getDateModified();
+
+    /**
+     * @return integer
+     */
+    public function getSize();
+}
diff --git a/src/Node/StatInterface.php b/src/Node/StatInterface.php
new file mode 100644
index 0000000..84a9429
--- /dev/null
+++ b/src/Node/StatInterface.php
@@ -0,0 +1,49 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Node;
+
+/**
+ * @link http://www.gnu.org/software/libc/manual/html_node/Permission-Bits.html
+ */
+interface StatInterface
+{
+    const S_IFMT  = 0170000;
+    const S_IFLNK = 0120000;
+    const S_IFREG = 0100000;
+    const S_IFDIR = 0040000;
+    const S_IRUSR = 0000400;
+    const S_IWUSR = 0000200;
+    const S_IXUSR = 0000100;
+    const S_IRGRP = 0000040;
+    const S_IWGRP = 0000020;
+    const S_IXGRP = 0000010;
+    const S_IROTH = 0000004;
+    const S_IWOTH = 0000002;
+    const S_IXOTH = 0000001;
+
+    const GROUP_EXEC  = self::S_IXGRP;
+    const GROUP_WRITE = self::S_IWGRP;
+    const GROUP_READ  = self::S_IRGRP;
+    const OTHER_EXEC  = self::S_IXOTH;
+    const OTHER_WRITE = self::S_IWOTH;
+    const OTHER_READ  = self::S_IROTH;
+    const USER_EXEC   = self::S_IXUSR;
+    const USER_READ   = self::S_IRUSR;
+    const USER_WRITE  = self::S_IWUSR;
+    const TYPE_BLOCK  = self::S_IFMT;
+    const TYPE_FILE   = self::S_IFREG;
+    const TYPE_DIR    = self::S_IFDIR;
+    const TYPE_LINK   = self::S_IFLNK;
+
+    /**
+     * @return integer
+     */
+    public function getMode();
+}
diff --git a/src/Node/Walker/NodeWalker.php b/src/Node/Walker/NodeWalker.php
new file mode 100644
index 0000000..7434613
--- /dev/null
+++ b/src/Node/Walker/NodeWalker.php
@@ -0,0 +1,75 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Node\Walker;
+
+use Vfs\Exception\InvalidNodeTypeException;
+use Vfs\Node\NodeContainerInterface;
+use Vfs\Node\NodeInterface;
+
+class NodeWalker implements NodeWalkerInterface
+{
+    protected $separator;
+
+    /**
+     * @param string $separator
+     */
+    public function __construct($separator = DIRECTORY_SEPARATOR)
+    {
+        $this->separator = $separator;
+    }
+
+    /**
+     * @param NodeInterface $root
+     * @param string $path
+     * @return NodeInterface
+     */
+    public function findNode(NodeInterface $root, $path)
+    {
+        $parts = $this->splitPath($path);
+        $node = $root;
+
+        return $this->walkPath($root, $path, function (NodeInterface $node, $name) {
+            if (!$node instanceof NodeContainerInterface || !$node->has($name)) {
+                return null;
+            }
+
+            return $node->get($name);
+        });
+    }
+
+    /**
+     * @param NodeInterface $root
+     * @param string $path
+     * @param callable $fn
+     * @return NodeInterface
+     */
+    public function walkPath(NodeInterface $root, $path, callable $fn)
+    {
+        $parts = $this->splitPath($path);
+        $name = current($parts);
+        $node = $root;
+
+        while ($node && $name) {
+            $node = $fn($node, $name);
+            $name = next($parts);
+        }
+
+        return $node;
+    }
+
+    /**
+     * @param string $path
+     * @return string[]
+     */
+    protected function splitPath($path)
+    {
+        return array_filter(explode($this->separator, $path));
+    }
+}
diff --git a/src/Node/Walker/NodeWalkerInterface.php b/src/Node/Walker/NodeWalkerInterface.php
new file mode 100644
index 0000000..a67cfce
--- /dev/null
+++ b/src/Node/Walker/NodeWalkerInterface.php
@@ -0,0 +1,22 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Node\Walker;
+
+use Vfs\Node\NodeInterface;
+
+interface NodeWalkerInterface
+{
+    /**
+     * @param NodeInterface $root
+     * @param string $path
+     * @return NodeInterface
+     */
+    public function findNode(NodeInterface $root, $path);
+}
diff --git a/src/RegistryInterface.php b/src/RegistryInterface.php
new file mode 100644
index 0000000..8ca4a35
--- /dev/null
+++ b/src/RegistryInterface.php
@@ -0,0 +1,43 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs;
+
+use Vfs\Exception\RegisteredSchemeException;
+use Vfs\Exception\UnregisteredSchemeException;
+
+interface RegistryInterface
+{
+    /**
+     * @param string $scheme
+     * @param FileSystemInterface $fs
+     * @throws RegisteredSchemeException If a mounted file system exists at scheme
+     */
+    public function add($scheme, FileSystemInterface $fs);
+
+    /**
+     * @param string $scheme
+     * @return FileSystemInterface
+     * @throws UnregisteredSchemeException If a mounted file system doesn't exist at scheme
+     */
+    public function get($scheme);
+
+    /**
+     * @param string $scheme
+     * @return boolean
+     */
+    public function has($scheme);
+
+    /**
+     * @param string $scheme
+     * @return FileSystemInterface
+     * @throws UnregisteredSchemeException If a mounted file system doesn't exist at scheme
+     */
+    public function remove($scheme);
+}
diff --git a/src/Stream/AbstractHandle.php b/src/Stream/AbstractHandle.php
new file mode 100644
index 0000000..129bd62
--- /dev/null
+++ b/src/Stream/AbstractHandle.php
@@ -0,0 +1,117 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Stream;
+
+use Vfs\FileSystemInterface;
+use Vfs\Node\NodeInterface;
+
+abstract class AbstractHandle implements HandleInterface
+{
+    protected $fs;
+    protected $node;
+    protected $mode;
+    protected $modifier;
+    protected $path;
+    protected $scheme;
+    protected $url;
+
+    /**
+     * @param FileSystemInterface $fs
+     * @param string $url
+     * @param string $mode
+     */
+    public function __construct(FileSystemInterface $fs, $url, $mode = null)
+    {
+        $this->fs = $fs;
+        $this->url = $url;
+
+        list($this->mode, $this->modifier) = $this->parseMode($mode);
+        list($this->scheme, $this->path) = $this->parseUrl($url);
+    }
+
+    /**
+     * @return NodeInterface
+     */
+    public function getNode()
+    {
+        return $this->node;
+    }
+
+    /**
+     * @param string $origin
+     * @param string $target
+     * @return NodeInterface
+     */
+    public function rename($target)
+    {
+        $this->node = $this->findNode($this->path);
+        $parent = $this->fs->get(dirname($this->path));
+
+        list($_, $targetPath) = $this->parseUrl($target);
+        $targetParent = $this->fs->get(dirname($targetPath));
+
+        if (!$this->node || !$targetPath) {
+            $this->node = null;
+            $this->warn('rename({origin},{target}): No such file or directory', [
+                'origin' => $this->url,
+                'target' => $target
+            ]);
+        } else {
+            $parent->remove(basename($this->path));
+            $targetParent->add(basename($targetPath), $this->node);
+        }
+
+        return $this->node;
+    }
+
+    /**
+     * @return NodeInterface
+     */
+    protected function findNode()
+    {
+        return $this->fs->get($this->path);
+    }
+
+    /**
+     * @param string $mode
+     * @return string[]
+     */
+    protected function parseMode($mode)
+    {
+        return [substr($mode, 0, 1), substr($mode, 1, 2)];
+    }
+
+    /**
+     * @param string $url
+     * @return string[]
+     */
+    protected function parseUrl($url)
+    {
+        $parts = parse_url($url);
+        $path = null;
+        $scheme = null;
+
+        if (isset($parts['scheme'])) {
+            $path = substr($url, strlen($parts['scheme'] . ':/'));
+            $scheme = $parts['scheme'];
+        }
+
+        return [$scheme, $path];
+    }
+
+    /**
+     * @param string $message
+     * @param array $context
+     */
+    protected function warn($message, array $context = [])
+    {
+        $this->fs->getLogger()->warning($message, $context);
+    }
+}
diff --git a/src/Stream/DirectoryHandle.php b/src/Stream/DirectoryHandle.php
new file mode 100644
index 0000000..79664de
--- /dev/null
+++ b/src/Stream/DirectoryHandle.php
@@ -0,0 +1,133 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Stream;
+
+use Vfs\Exception\UnopenedHandleException;
+
+class DirectoryHandle extends AbstractHandle
+{
+    /**
+     * @return boolean
+     */
+    public function canRead()
+    {
+        return true;
+    }
+
+    /**
+     * @param integer $perms
+     * @param boolean $recursive
+     * @return NodeInterface
+     */
+    public function create($perms, $recursive = false)
+    {
+        $this->node = $this->findNode();
+
+        if (!$this->node) {
+            $parentPath = dirname($this->path);
+            $parent = $this->fs->get($parentPath);
+
+            if (!$parent && $this->checkBit($options, STREAM_MKDIR_RECURSIVE)) {
+                $parent = $this->buildNodesRecursive($this->fs->get('/'), $this->path);
+            }
+
+            if ($parent) {
+                $this->node = $this->fs->getNodeFactory()->buildDirectory();
+                $parent->add(basename($this->path), $this->node);
+            } else {
+                $this->warn('mkdir({url}): No such file or directory', [
+                    'url' => $this->url
+                ]);
+            }
+        } else {
+            $this->warn('mkdir({url}): File exists', ['url' => $this->url]);
+            $this->node = null;
+        }
+
+        return $this->node;
+    }
+
+    /**
+     * @return boolean
+     */
+    public function destroy()
+    {
+        $this->node = $this->findNode();
+
+        if (!$this->node) {
+            return (boolean) $this->warn('rmdir({url}): No such file or directory', [
+                'url' => $this->url
+            ]);
+        } elseif (!$this->node instanceof NodeContainerInterface) {
+            return (boolean) $this->warn('rmdir({url}): Not a directory', [
+                'url' => $this->url
+            ]);
+        }
+
+        $parent = $fs->get(dirname($this->path));
+        $parent->remove(basename($this->path));
+
+        return true;
+    }
+
+    /**
+     * @return NodeInterface
+     */
+    public function open()
+    {
+        return $this->node = $this->findNode();
+    }
+
+    /**
+     * @param integer $offset
+     * @return string
+     */
+    public function read($offset = 0)
+    {
+        if (!$this->node) {
+            throw new UnopenedHandleException($this, $this->url);
+        }
+
+        $i = 0;
+        foreach ($this->node as $name => $node) {
+            if ($i++ === $offset) {
+                return $name;
+            }
+        }
+    }
+
+    /**
+     * @param string $content
+     * @return boolean
+     */
+    public function write($content)
+    {
+        return false;
+    }
+
+    /**
+     * @param NodeContainerInterface $root
+     * @param string $path
+     * @return NodeContainerInterface
+     */
+    protected function buildNodesRecursive(NodeContainerInterface $root, $path)
+    {
+        $factory = $this->fs->getNodeFactory();
+        $walker = $this->fs->getNodeWalker();
+
+        return $walker->walkPath($root, $this->path, function ($node, $name) use ($factory) {
+            if (!$node->has($name)) {
+                $node->add($name, $factory->buildDirectory());
+            }
+
+            return $node->get($name);
+        });
+    }
+}
diff --git a/src/Stream/FileHandle.php b/src/Stream/FileHandle.php
new file mode 100644
index 0000000..a74dc2d
--- /dev/null
+++ b/src/Stream/FileHandle.php
@@ -0,0 +1,130 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Stream;
+
+use Vfs\Exception\UnopenedHandleException;
+use Vfs\Node\FileInterface;
+use Vfs\Node\NodeContainerInterface;
+
+class FileHandle extends AbstractHandle
+{
+    /**
+     * @return boolean
+     */
+    public function canRead()
+    {
+        return self::MODE_READ === $this->mode || self::MOD_EXTENDED === $this->modifier;
+    }
+
+    /**
+     * @param integer $perms
+     * @return NodeInterface
+     */
+    public function create($perms)
+    {
+        return $this->node = $this->findOrBuildNode();
+    }
+
+    /**
+     * @return boolean
+     */
+    public function destroy()
+    {
+        $this->node = $this->findNode();
+
+        if (!$this->node) {
+            return (boolean) $this->warn('unlink({url}): No such file or directory', [
+                'url' => $this->url
+            ]);
+        } elseif ($this->node instanceof NodeContainerInterface) {
+            return (boolean) $this->warn('unlink({url}): Is a directory', [
+                'url' => $this->url
+            ]);
+        }
+
+        $parent = $this->fs->get(dirname($this->path));
+        $parent->remove(basename($this->path));
+
+        return true;
+    }
+
+    /**
+     * @return NodeInterface
+     */
+    public function open()
+    {
+        $this->node = $this->findOrBuildNode();
+
+        if ($this->node instanceof FileInterface && self::MODE_TRUNCATE === $this->mode) {
+            $this->node->setContent('');
+        }
+
+        return $this->node;
+    }
+
+    /**
+     * @param integer $offset
+     * @param integer $length
+     * @return string
+     */
+    public function read($offset = 0, $length = null)
+    {
+        if (!$this->node) {
+            throw new UnopenedHandleException($this, $this->url);
+        }
+
+        if (null !== $length) {
+            return substr($this->node->getContent(), $offset, $length);
+        }
+
+        return substr($this->node->getContent(), $offset);
+    }
+
+    /**
+     * @param string $content
+     * @return boolean
+     */
+    public function write($content)
+    {
+        if (!$this->node) {
+            throw new UnopenedHandleException($this, $this->url);
+        }
+
+        $this->node->setContent($content);
+
+        return true;
+    }
+
+    /**
+     * @return NodeInterface
+     */
+    protected function findOrBuildNode()
+    {
+        $this->node = $this->fs->get($this->path);
+
+        if ($this->node && self::MODE_WRITE === $this->mode) {
+            $this->node = null;
+        } elseif (!$this->node && in_array($this->mode, [
+            self::MODE_APPEND,
+            self::MODE_TRUNCATE,
+            self::MODE_WRITE,
+            self::MODE_WRITE_NEW
+        ])) {
+            $dir = $this->fs->get(dirname($this->path));
+
+            if ($dir && $dir instanceof NodeContainerInterface) {
+                $this->node = $this->fs->getNodeFactory()->buildFile();
+                $dir->set(basename($this->path), $this->node);
+            }
+        }
+
+        return $this->node;
+    }
+}
diff --git a/src/Stream/HandleInterface.php b/src/Stream/HandleInterface.php
new file mode 100644
index 0000000..36d2328
--- /dev/null
+++ b/src/Stream/HandleInterface.php
@@ -0,0 +1,69 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Stream;
+
+use Vfs\Node\NodeInterface;
+
+interface HandleInterface
+{
+    const MODE_APPEND    = 'a';
+    const MODE_READ      = 'r';
+    const MODE_TRUNCATE  = 'w';
+    const MODE_WRITE     = 'x';
+    const MODE_WRITE_NEW = 'c';
+    const MOD_BINARY     = 'b';
+    const MOD_EXTENDED   = '+';
+    const MOD_TEXT       = 't';
+
+    /**
+     * @return boolean
+     */
+    public function canRead();
+
+    /**
+     * @param integer $perms
+     * @return NodeInterface
+     */
+    public function create($perms);
+
+    /**
+     * @return boolean
+     */
+    public function destroy();
+
+    /**
+     * @return NodeInterface
+     */
+    public function getNode();
+
+    /**
+     * @return NodeInterface
+     */
+    public function open();
+
+    /**
+     * @param string $origin
+     * @param string $target
+     * @return NodeInterface
+     */
+    public function rename($target);
+
+    /**
+     * @param integer $offset
+     * @return string
+     */
+    public function read($offset = 0);
+
+    /**
+     * @param string $content
+     * @return boolean
+     */
+    public function write($content);
+}
diff --git a/src/Stream/StreamWrapper.php b/src/Stream/StreamWrapper.php
new file mode 100644
index 0000000..e40697b
--- /dev/null
+++ b/src/Stream/StreamWrapper.php
@@ -0,0 +1,345 @@
+<?php
+/*
+ * This file is part of VFS
+ *
+ * Copyright (c) 2014 Andrew Lawson <http://adlawson.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Vfs\Stream;
+
+use Vfs\Node\LinkInterface;
+use Vfs\FileSystemRegistry;
+
+class StreamWrapper
+{
+    protected $cursor = 0;
+    protected $handle;
+    protected $mode;
+    protected $url;
+
+    /**
+     * @return boolean
+     */
+    public function dir_closedir()
+    {
+        $this->stream_close();
+
+        return true;
+    }
+
+    /**
+     * @param string $url
+     * @param integer $options
+     * @return boolean
+     */
+    public function dir_opendir($url, $options)
+    {
+        $this->handle = $this->buildDirectoryHandle($url);
+
+        return (boolean) $this->handle->open();
+    }
+
+    /**
+     * @return string
+     */
+    public function dir_readdir()
+    {
+        return $this->handle->read($this->cursor++);
+    }
+
+    /**
+     * @return boolean
+     */
+    public function dir_rewinddir()
+    {
+        $this->cursor = 0;
+
+        return true;
+    }
+
+    /**
+     * @param string $url
+     * @param integer $perms
+     * @param integer $flags
+     * @return boolean
+     */
+    public function mkdir($url, $perms, $flags)
+    {
+        $this->handle = $this->buildDirectoryHandle($url);
+        $recursive = $this->checkBit($flags, STREAM_MKDIR_RECURSIVE);
+
+        return (boolean) $this->handle->create($perms, $recursive);
+    }
+
+    /**
+     * @param string $origin
+     * @param string $target
+     * @return boolean
+     */
+    public function rename($origin, $target)
+    {
+        $this->handle = $this->buildFileHandle($origin);
+
+        return (boolean) $this->handle->rename($target);
+    }
+
+    /**
+     * @param string $url
+     * @param integer $options
+     * @return boolean
+     */
+    public function rmdir($url, $options)
+    {
+        $this->handle = $this->buildDirectoryHandle($url);
+
+        return (boolean) $this->handle->destroy();
+    }
+
+    /**
+     * @param integer $cast
+     * @return resource|boolean
+     */
+    public function stream_cast($cast)
+    {
+        return false; // No underlying resource
+    }
+
+    /**
+     */
+    public function stream_close()
+    {
+        $this->cursor = 0;
+        $this->handle = null;
+    }
+
+    /**
+     * @return boolean
+     */
+    public function stream_eof()
+    {
+        $node = $this->handle->getNode();
+
+        return !$node || $node->getSize() <= $this->cursor;
+    }
+
+    /**
+     * @return boolean
+     */
+    public function stream_flush()
+    {
+        return true; // Non-buffered writing
+    }
+
+    /**
+     * @param string $url
+     * @param string $mode
+     * @param integer $options
+     * @param string $openedPath
+     * @return boolean
+     */
+    public function stream_open($url, $mode, $options, &$openedPath)
+    {
+        $this->cursor = 0;
+        $this->handle = $this->buildFileHandle($url, $mode);
+        $node = $this->handle->open();
+
+        if ($node && $this->checkBit($options, STREAM_USE_PATH)) {
+            $openedPath = $url;
+        }
+
+        if (isset($mode[0]) && $node && HandleInterface::MODE_APPEND === $mode[0]) {
+            $this->cursor = $node->getSize();
+        }
+
+        return (boolean) $node;
+    }
+
+    /**
+     * @param integer $length
+     * @return string|boolean
+     */
+    public function stream_read($length)
+    {
+        if ($this->handle->canRead()) {
+            $out = $this->handle->read($this->cursor, $length);
+            $this->cursor += strlen($out);
+
+            return $out;
+        }
+
+        return false;
+    }
+
+    /**
+     * @param integer $offset
+     * @param integer $whence
+     * @return boolean
+     */
+    public function stream_seek($offset, $whence = SEEK_SET)
+    {
+        switch ($whence) {
+            case SEEK_SET:
+                $this->cursor = (integer) $offset;
+                break;
+            case SEEK_CUR:
+                $this->cursor += (integer) $offset;
+                break;
+            case SEEK_END:
+                $length = strlen($this->wrapper->read());
+                $this->cursor = $length + (integer) $offset;
+                break;
+            default:
+                return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * @param integer $option
+     * @param integer $arg1
+     * @param integer $arg2
+     * @return boolean
+     */
+    public function stream_set_option($option, $arg1, $arg2)
+    {
+        return true;
+    }
+
+    /**
+     * @param boolean $followLink
+     * @return array|boolean
+     */
+    public function stream_stat($followLink = false)
+    {
+        $node = $this->handle->getNode();
+
+        if (!$node) {
+            return false;
+        } elseif ($followLink && $node instanceof LinkInterface) {
+            $node = $node->getTarget();
+        }
+
+        $stat = [
+            'dev'     => 0,
+            'ino'     => 0,
+            'mode'    => $node->getMode(),
+            'nlink'   => 0,
+            'uid'     => 0,
+            'gid'     => 0,
+            'rdev'    => 0,
+            'size'    => $node->getSize(),
+            'atime'   => $node->getDateAccessed()->getTimestamp(),
+            'mtime'   => $node->getDateModified()->getTimestamp(),
+            'ctime'   => $node->getDateCreated()->getTimestamp(),
+            'blksize' => -1,
+            'blocks'  => -1
+        ];
+
+        return array_values($stat) + $stat;
+    }
+
+    /**
+     * @return integer
+     */
+    public function stream_tell()
+    {
+        return $this->cursor;
+    }
+
+    /**
+     * @param integer $size
+     * @return boolean
+     */
+    public function stream_truncate($size)
+    {
+        if ($size > $current) {
+            $this->handle->write($this->handle->read() . str_repeat("\0", $size - $current));
+        } else {
+            $this->handle->write($this->handle->read(0, $size));
+        }
+
+        return true;
+    }
+
+    /**
+     * @param string $data
+     * @return integer
+     */
+    public function stream_write($data)
+    {
+        $content = substr($this->handle->read(0, $this->cursor), 0, $this->cursor) . $data;
+        $written = $this->handle->write($content);
+
+        $this->cursor = strlen($content);
+
+        return $written ? strlen($data) : 0;
+    }
+
+    /**
+     * @param string $url
+     * @return boolean
+     */
+    public function unlink($url)
+    {
+        $this->handle = $this->buildFileHandle($url);
+
+        return (boolean) $this->handle->destroy();
+    }
+
+    /**
+     * @param string $url
+     * @param integer $flags
+     * @return array
+     */
+    public function url_stat($url, $flags)
+    {
+        $this->handle = $this->buildFileHandle($url);
+        $this->handle->open();
+
+        return $this->stream_stat(!$this->checkBit($flags, STREAM_URL_STAT_LINK));
+    }
+
+    /**
+     * @param string $url
+     * @return DirectoryHandle
+     */
+    protected function buildDirectoryHandle($url)
+    {
+        return new DirectoryHandle($this->getFileSystemForUrl($url), $url);
+    }
+
+    /**
+     * @param string $url
+     * @param string $mode
+     * @return FileHandle
+     */
+    protected function buildFileHandle($url, $mode = null)
+    {
+        return new FileHandle($this->getFileSystemForUrl($url), $url, $mode);
+    }
+
+    /**
+     * @param integer $mask
+     * @param integer $bit
+     * @return boolean
+     */
+    protected function checkBit($mask, $bit)
+    {
+        return ($mask & $bit) === $bit;
+    }
+
+    /**
+     * @param string $url
+     * @return FileSystemInterface
+     */
+    protected function getFileSystemForUrl($url)
+    {
+        $parts = parse_url($url);
+        $scheme = isset($parts['scheme']) ? $parts['scheme'] : null;
+
+        return FileSystemRegistry::getInstance()->get($scheme);
+    }
+}