Related sites:

• sifterapp.com

  A Simple Bug and Issue Tracker - Sifter

• flowdock.com

  Flowdock: Group chat for teams. Integrates with GitHub, Jira, Trello.

  

• gitref.org

  GitHub Professional Services | From idea to implementation, our experts are ready to help your team get wherever you want to go. Start a conversation with us about how we can bring your goals to life.

  

• rubydoc.info

  RubyDoc.info: Documenting RubyGems, Stdlib, and GitHub Projects

  

• huboard.com

  HuBoard - GitHub issues made awesome.

  

• github.io

  GitHub Pages | Websites for you and your projects, hosted directly from your GitHub repository. Just edit, push, and your changes are live.

  

• waffle.io

  Developer-first Project Management for Teams on GitHub | Waffle.io