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  1. Platform to host Capture the Flag competitions

    Hack 5,191 1,030 Built by @javuto @gsingh93 @justinwray @mpomarole @juliannagler
  2. Class libraries for XHP. XHP is a Hack feature that augments the syntax of the language such that XML document fragments become valid PHP expressions.

    Hack 1,201 153 Built by @fredemmott @Swahvay @laverdet @simonwelsh @TJ09
  3. Library to programatically generate Hack code and write it to signed files

    Hack 299 81 Built by @fredemmott @alejandromarcu @gauravkdeo @simonwelsh @Neitsch
  4. A simple website that contains Hack examples and acts as a Hack example itself

    Hack 289 80 Built by @JoelMarcey
  5. A modular Hack framework that runs on HHVM.

    Hack 202 21 Built by @milesj @alex-phillips @GrahamCampbell @BackEndCoder
  6. The official Hack Language specification.

    Hack 144 36 Built by @JoelMarcey @RexJaeschke @jwatzman @peterhal @ericlippert
  7. Copy commits between repositories - git => git, git => hg, hg => hg, or hg => git

    Hack 134 35 Built by @sdwilsh @fredemmott @yns88 @facebook-github-bot @zpao
  8. Scripts for benchmarking various PHP implementations when running open source software.

    Hack 111 33 Built by @fredemmott @mofarrell @rrh @joelpob @reedy
  9. Provides classes to use with XHP for common components of Twitter's Bootstrap library.

    Hack 100 25 Built by @fredemmott @ptarjan @ckwalsh @tonyhhyip @fpacifici
  10. A miniKanren in PHP.

    Hack 65 3 Built by @igorw @wouterj
  11. Documentation for those that use HHVM and write Hack and PHP code for HHVM. http://twitter.com/HHVMDocCommits

    Hack 60 61 Built by @fredemmott @JoelMarcey @matthewjohnston4 @mofarrell @daviddoran
  12. xUnit testing framework written in hacklang

    Hack 58 10 Built by @kilahm @brianium @austinsmorris @GroovyCarrot @belka-ew
  13. [Archive] Experimental MongoDB driver for HHVM

    Hack 56 6 Built by @mgentili @jmikola @yf225 @vincentdo @snowbabyjia
  14. Fuzzers for the Linux kernel

    Hack 56 12 Built by @brunoborges @vegard
  15. Easily create JS controllers for XHP elements, and XHP wrappers for React elements

    Hack 45 5 Built by @fredemmott @aewing @simonwelsh
  16. Hackathon application and user information system

    Hack 34 8 Built by @BobertForever @aetherson @nlaz @ThomasGaubert @cedricgc
  17. A hack-lang mvc Framework

    Hack 30 126 Built by @gilbitron @craig552uk @esokullu @robertabramski
  18. The Hack Standard Library

    Hack 27 3 Built by @kmeht @fredemmott @devchakraborty @jwatzman @KendallHopkins
  19. Autoload classes, functions, enums, constants, and typedefs on HHVM

    Hack 16 9 Built by @fredemmott @simonwelsh @TJ09 @GrahamCampbell @GroovyCarrot
  20. Request routing for HackLang

    Hack 10 3 Built by @fredemmott @acrylic-origami @simonwelsh
  21. Hack library for converting untyped data to typed data.

    Hack 10 3 Built by @fredemmott @dlreeves
  22. Example project for XHP-JS

    Hack 10 Built by @fredemmott
  23. An extensible micro-framework for HackLang

    Hack 9 2 Built by @slashmili @farzadghanei @Andi-K @atharh
  24. Async Socket Server Experiment in HHVM's HackLang

    Hack 9 1 Built by @steelbrain
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