amphp : Amp is a non-blocking concurrency framework for PHP providing primitives to manage concurrency such as an event loop, promises, and asynchronous itera...
Silex : The PHP micro-framework based on Symfony2 Components
Symfony : Symfony is a set of reusable PHP components and a PHP framework for web projects.
Go kit : Go is a great general-purpose language, but microservices require a certain amount of specialized support. RPC safety, system observability, infrastru...
Kraken is the first and only multi-processed, multi-threaded, fault-tolerant framework for PHP. It has been written to provide easy and reliable API for creating distributed applications using PHP.