GitPigeon - GitHub notifications delivered to your Mac
Mergefly - A modern UI for GitHub pull requests
Neat.run - Neat puts SaaS notifications in your menu bar. Streamline your code review and ship with ease. Preview, triage, and jump to issues in one click or keystroke.
CodeTriage - Help out your favorite open source projects and become a better developer while doing it.
Meteorite - Smarter GitHub notifications.
Contractbook - Helping businesses scale with future-proof contracts