GitHub for Atom - Git and GitHub integration right inside Atom
Kitemaker - A fast issue tracker for makers and innovators
KanbanFlow - KanbanFlow is a Lean project management tool allowing real-time collaboration between team members. Supports the Pomodoro technique for time tracking.
Linear - Streamlined issue tracking for software teams
Hygger - Hygger - is an Agile project management tool with built-in prioritization.
Triage & Timeline by Linear - The issue tracking tool you'll enjoy using