Swoole is an event-driven, asynchronous & concurrent networking communication engine with higher performance written only in C for PHP. Swoole includes components for different purposes: TCP/UDP Server and Client, Task Worker, Database Connection Pooling, Millisecond Timer, Event, Async IO, Async Http/WebSocket Client, Async Redis Client, Async MySQL Client, and Async DNS Requiring. With these components, Swoole allows you to build many features, which are widely used in the applications about Internet, mobile communication, enterprise software, cloud computing, online game, IoT, IoV, and smart home, etc. For IT development group, it can improve the efficiency, which makes them focus on the innovational products.
http://www.swoole.com/
Workerman An asynchronous event driven PHP framework for easily building fast, scalable network applications. Supports HTTP, Websocket, SSL and other custom protocols. Supports libevent, HHVM, ReactPHP.
https://github.com/walkor/Workerman
Express.js Fast, unopinionated, minimalist web framework for node.
https://github.com/expressjs/express