Fizzy

Fizzy is a free, open source kanban tool designed for modern, lightweight, and flexible issue and idea tracking. Created by 37signals (the makers of Basecamp and HEY), Fizzy emphasizes speed, simplicity, and intuitive features, avoiding the bloat common in other project management tools. Users can track bugs, ideas, issues, or projects, customize their boards, set up webhooks for Slack or Campfire, and even self-host the system. It's perfect for anyone seeking a fast, no-nonsense kanban experience.