They use it!

1. atom-beautify by @Glavin001
2. atom-flow @snowkit
3. atom-haxe @snowkit
4. atom-language-purescript by @darinmorrison
5. Atom-TypeScript by @basarat
6. autocomplete-plus-python-jedi by @tinloaf
7. CSSLint by @tcarlsen
8. Erlang Build by @spiegela
9. flake8 by @julozi
10. Gitter by @glavin001
11. grunt-configs by @creynders
12. harbour-plus by @hernad
13. Helium by @andyfriesen
14. HTMLHint by @tcarlsen
15. JSLint by @tcarlsen
16. language-idris by @fangel
17. local-history by @Nicolab
18. npm-install by @hughsk
19. makro by @dreid93
20. pawn-build by @frxstrem
21. PHP Server by @leijou
22. redpen by @griffin-stewie
23. Remote Sync by @vslinko
24. remote-edit by @sveale
25. require-opener by @hughsk
26. rhino-python @mcneel
27. secure-copy by @kmorey
28. sourcegraph-atom by Sourcegraph @srcgraph
29. language-anubis by @grz0zrg
30. tools-povray by @grz0zrg
31. atom-maven by @concon121