React (http://reactphp.org http://reactphp.org) is nice if you want to do real-time or websocket stuff. Also supports asynchronous Redis, ZeroMQ, and DNS querie

React (http://reactphp.org http://reactphp.org) is nice if you want to do real-time or websocket stuff. Also supports asynchronous Redis, ZeroMQ, and DNS queries. I would love to see an asynchronous database client (for instance Mysql) for it, but for now I use PDO.