Shrink for Github - A macOS app for your Github issues
Codetree - You can manage your entire development process through GitHub.
Fire bot - Let your whole team create GitHub issues via email 🔥✉️️
Huboard - HuBoard is built from the ground up using the GitHub public API.
PullReminders - Review and release pull requests faster with Slack reminders and metrics.
Zube - Project management for developers.