HHVM: High performance Hack and PHP

 

HHVM is an open source virtual machine for executing programs written in Hack and PHP. It maintains PHP’s development flexibility while using a just-in-time compilation approach for better performance.

hhvm
Homepage: http://hhvm.com/
GitHub: http://github.com/facebook/hhvm
Docs: http://docs.hhvm.com/hhvm/