diff --git a/src/EventLoopDriver.php b/src/EventLoopDriver.php
new file mode 100644
index 0000000..013d846
--- /dev/null
+++ b/src/EventLoopDriver.php
@@ -0,0 +1,138 @@
+<?php
+
+namespace Interop\Async\EventLoop;
+
+interface EventLoopDriver
+{
+    /**
+     * Start the event loop.
+     * 
+     * @return void
+     */
+    public function run();
+
+    /**
+     * Stop the event loop.
+     * 
+     * @return void
+     */
+    public function stop();
+
+    /**
+     * Defer the execution of a callback.
+     * 
+     * @param callable $callback The callback to defer.
+     * 
+     * @return string An identifier that can be used to cancel, enable or disable the event.
+     */
+    public function defer(callable $callback);
+
+    /**
+     * Delay the execution of a callback. The time delay is approximate and accuracy is not guaranteed.
+     * 
+     * @param callable $callback The callback to delay.
+     * @param float $time The amount of time, in seconds, to delay the execution for.
+     * 
+     * @return string An identifier that can be used to cancel, enable or disable the event.
+     */
+    public function delay(callable $callback, float $time);
+
+    /**
+     * Repeatedly execute a callback. The interval between executions is approximate and accuracy is not guaranteed.
+     * 
+     * @param callable $callback The callback to repeat.
+     * @param float $interval The time interval, in seconds, to wait between executions.
+     * 
+     * @return string An identifier that can be used to cancel, enable or disable the event.
+     */
+    public function repeat(callable $callback, float $interval);
+
+    /**
+     * Execute a callback when a stream resource becomes readable.
+     * 
+     * @param resource $stream The stream to monitor.
+     * @param callable $callback The callback to execute.
+     * 
+     * @return string An identifier that can be used to cancel, enable or disable the event.
+     */
+    public function onReadable($stream, callable $callback);
+
+    /**
+     * Execute a callback when a stream resource becomes writable.
+     * 
+     * @param resource $stream The stream to monitor.
+     * @param callable $callback The callback to execute.
+     * 
+     * @return string An identifier that can be used to cancel, enable or disable the event.
+     */
+    public function onWritable($stream, callable $callback);
+
+    /**
+     * Execute a callback when a signal is received.
+     * 
+     * @param int $signo The signal number to monitor.
+     * @param callable $callback The callback to execute.
+     * 
+     * @return string An identifier that can be used to cancel, enable or disable the event.
+     */
+    public function onSignal(int $signo, callable $callback);
+
+    /**
+     * Execute a callback when an error occurs.
+     * 
+     * @param callable $callback The callback to execute.
+     * 
+     * @return string An identifier that can be used to cancel, enable or disable the event.
+     */
+    public function onError(callable $callback);
+
+    /**
+     * Enable an event.
+     * 
+     * @param string $eventIdentifier The event identifier.
+     * 
+     * @return void
+     */
+    public function enable(string $eventIdentifier);
+
+    /**
+     * Disable an event.
+     * 
+     * @param string $eventIdentifier The event identifier.
+     * 
+     * @return void
+     */
+    public function disable(string $eventIdentifier);
+
+    /**
+     * Cancel an event.
+     * 
+     * @param string $eventIdentifier The event identifier.
+     * 
+     * @return void
+     */
+    public function cancel(string $eventIdentifier);
+
+    /**
+     * Reference an event.
+     * 
+     * This will keep the event loop alive whilst the event is still being monitored. Events have this state by default.
+     * 
+     * @param string $eventIdentifier The event identifier.
+     * 
+     * @return void
+     */
+    public function reference(string $eventIdentifier);
+
+    /**
+     * Unreference an event.
+     * 
+     * The event loop should exit the run method when only unreferenced events are still being monitored. Events are all
+     * referenced by default.
+     * 
+     * @param string $eventIdentifier The event identifier.
+     * 
+     * @return void
+     */
+    public function unreference(string $eventIdentifier);
+}
diff --git a/src/EventLoopInterface.php b/src/EventLoopInterface.php
deleted file mode 100644
index c6905d2..0000000
--- a/src/EventLoopInterface.php
+++ /dev/null
@@ -1,7 +0,0 @@
-<?php
-
-namespace Interop\Async\EventLoop;
-
-interface EventLoopInterface
-{
-}