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  1. Platform to host Capture the Flag competitions

    Hack 4,850 923 Built by @javuto @gsingh93 @mpomarole @justinwray @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 1,173 148 Built by @fredemmott @Swahvay @laverdet @simonwelsh @scottmac
  3. Library to programatically generate Hack code and write it to signed files

    Hack 289 76 Built by @fredemmott @alejandromarcu @gauravkdeo @elgenie @simonwelsh
  4. A simple website that contains Hack examples and acts as a Hack example itself

    Hack 286 82 Built by @JoelMarcey
  5. A modular Hack framework that runs on HHVM.

    Hack 195 17 Built by @milesj @alex-phillips @GrahamCampbell @BackEndCoder
  6. The official Hack Language specification.

    Hack 123 30 Built by @JoelMarcey @RexJaeschke @jwatzman @peterhal @ericlippert
  7. Scripts for benchmarking various PHP implementations when running open source software.

    Hack 104 31 Built by @fredemmott @mofarrell @rrh @joelpob @reedy
  8. Provides classes to use with XHP for common components of Twitter's Bootstrap library.

    Hack 93 19 Built by @fredemmott @ptarjan @ckwalsh @tonyhhyip @fpacifici
  9. Copy commits between repositories - git => git, git => hg, hg => hg, or hg => git

    Hack 77 22 Built by @sdwilsh @fredemmott @facebook-github-bot @mroch @snarkmaster
  10. A miniKanren in PHP.

    Hack 62 3 Built by @igorw @wouterj
  11. xUnit testing framework written in hacklang

    Hack 57 9 Built by @kilahm @brianium @austinsmorris @GroovyCarrot @belka-ew
  12. Experimental MongoDB driver for HHVM

    Hack 55 6 Built by @mgentili @jmikola @yf225 @vincentdo @snowbabyjia
  13. Documentation for those that use HHVM and write Hack and PHP code for HHVM. http://twitter.com/HHVMDocCommits

    Hack 52 55 Built by @JoelMarcey @fredemmott @matthewjohnston4 @mofarrell @daviddoran
  14. Fuzzers for the Linux kernel

    Hack 43 6 Built by @brunoborges @vegard
  15. Easily create JS controllers for XHP elements, and XHP wrappers for React elements

    Hack 40 6 Built by @fredemmott @aewing @simonwelsh
  16. Hackathon application and user information system

    Hack 30 8 Built by @BobertForever @aetherson @nlaz @ThomasGaubert @cedricgc
  17. Autoload classes, functions, enums, constants, and typedefs on HHVM

    Hack 8 3 Built by @fredemmott @GroovyCarrot @jesseschalken @HRMsimon @simonwelsh
  18. An extensible micro-framework for HackLang

    Hack 7 2 Built by @farzadghanei @slashmili @Andi-K @atharh
  19. Async Socket Server Experiment in HHVM's HackLang

    Hack 7 1 Built by @steelbrain
  20. Hprose for Hack

    Hack 6 1 Built by @andot @gitter-badger
  21. Request routing for HackLang

    Hack 6 1 Built by @fredemmott @simonwelsh
  22. LAN's member identity system and application portal

    Hack 5 3 Built by @BobertForever @DrewRomanyk @aetherson @arrdem @cedricgc
  23. Try quack on your browser

    Hack 5 1 Built by @haskellcamargo
  24. Async Redis Pub/Sub in HackLang

    Hack 5 Built by @steelbrain
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