Repokémon - Showcase of GitHub repos with Pokémon names
Hygger - Hygger - is an Agile project management tool with built-in prioritization.
GitHub Repository Size - Browser extension to show file and repo size in GitHub
KanbanFlow - KanbanFlow is a Lean project management tool allowing real-time collaboration between team members. Supports the Pomodoro technique for time tracking.
Charte - Free online interactive charts for non-techies
GitHub for Atom - Git and GitHub integration right inside Atom