OpenHub for GitHub - Fast and concise, open-source GitHub client app.
Productivity Power Tools - Extension for Visual Studio - A set of extensions to Visual Studio 2012 Professional (and above) which improves developer productivity.
Nullboard - Minimalist locally-stored kanban board / task list manager.
Ghost - Ghost is a fully open source, adaptable platform for building and running a modern online publication. We power blogs, magazines and journalists from Zappos to Sky News.
Brisqi - Offline-first personal Kanban app
Medium - Welcome to Medium, a place to read, write, and interact with the stories that matter most to you.