GitPigeon - GitHub notifications delivered to your Mac
Clocker - Keep track of people in different time zones
Meteorite - Smarter GitHub notifications.
Dato - Better menu bar clock with calendar and time zones
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.
Clock mini - Simple clock app in the Dock