Zube - Project management for developers.
Gitscout - A beautiful Github Issues experience for macOS
ZenHub - ZenHub is how the world's best software teams work together. Trusted by NASA, Docker, and Rackspace. Start free today!
Zokyo - GitHub Chrome Extension to track and manage issues
Nifty - Manage projects, work, and communications in one place.
GitHub Reader - A quick way to browse GitHub issues and pull requests.