Platform to host Capture the Flag competitions

System for collecting, deriving and working with facts about source code.

Copy commits between repositories · git → git, git → hg, hg → hg, or hg → git

The Hack Standard Library

Generate Hack JSON Schema validators based on a JSON Schema.

Experimental features for the Hack Standard Library

A port of the PHP HTML Purifier originally developed by Edward Z. Yang into Hacklang