HippyVM on average is 7.3x faster than stock PHP and 2x faster than Facebook's HHVM. Please check our benchmarks.
HippyVM is aimed at being 100% compatible with Zend PHP
PyPy proven technology guarantees high levels of stability
coming soon: a bridge to call Python from PHP
Relative speedup vs PHP, lower is better, normalized to Zend PHP 5.5.0
HippyVM is an implementation of the PHP language using PyPy technology. It started off as a research project by Maciej Fijałkowski for Facebook, and was later expanded. As of now, it contains a reasonably fast and complete implementation of the core PHP language, including implementation of many PHP's builtin modules (though not all, yet). At present it does not include a reasonable web server integration, so it's not usable for use in production in the current form.
HippyVM is being developed by Baroque Software, experts in the area of virtual machines.