Gitscout - A beautiful Github Issues experience for macOS
SlimPlanner - Team scheduling, resource planning, task management
Shrink for Github - A macOS app for your Github issues
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
VarCI - The missing assistant For GitHub issues
WorkPatterns - The modern manager's toolkit: 1:1s, feedback, & recognition