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basecamp/fizzy

Open-source source code for Fizzy, a Kanban tracker for issues and ideas by 37signals, self-hostable via ONCE, Docker, or Kamal.

Open-source alternative to:TrelloAsana

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What is it?

Fizzy is a Kanban tracking tool for issues and ideas, published by 37signals as open-source code. It is built on Ruby on Rails with Hotwire, and its topics point to a Rails-based web application.

The simplest way to run your own instance is ONCE, a installer that sets up a single-machine deployment and keeps it updated. For more control, the project supports deployment from a pre-built Docker image or with Kamal, which lets you change the code and ship those changes to your own server.

Developers who want to modify Fizzy can follow the included development guide for local setup. The project accepts contributions under a style guide, and is released under the O'Saasy License.

Key features

  • 01Kanban-style board for tracking issues and ideas
  • 02Single-machine self-hosting via the ONCE installer with automatic updates
  • 03Pre-built Docker image deployment option
  • 04Kamal deployment for custom code changes on your own server
  • 05Built with Ruby on Rails and Hotwire

Use cases

  • Self-hosting a team's issue and idea board on your own server
  • Customizing a Kanban tracker by modifying the Rails codebase
  • Studying a production Rails and Hotwire application

Quick start

  1. 1

    Run the official ONCE install script on the machine where you want Fizzy (see README)

  2. 2

    Follow the Docker or Kamal deployment guide for other setups

Things to know

  • The license is O'Saasy, not a standard OSI-approved open-source license, and automated license detection did not identify it.
  • Self-hosting outside ONCE requires following separate Docker or Kamal guides and managing your own server.

Topics

#kanban#ruby-on-rails#hotwire#issue-tracking#self-hosted#project-management#rails#ruby

FAQ

What is fizzy?
Open-source source code for Fizzy, a Kanban tracker for issues and ideas by 37signals, self-hostable via ONCE, Docker, or Kamal. Fizzy is a Kanban tracking tool for issues and ideas, published by 37signals as open-source code. It is built on Ruby on Rails with Hotwire, and its topics point to a Rails-based web application.
Is fizzy free to use? What license does it have?
fizzy is open source under the Other license. Check the license terms before using it in commercial products.
Is fizzy still maintained?
Actively maintained. The last commit to fizzy was on Oct 20, 2026.
What can I use fizzy for?
Self-hosting a team's issue and idea board on your own server Customizing a Kanban tracker by modifying the Rails codebase Studying a production Rails and Hotwire application
How do I install fizzy?
Run the official ONCE install script on the machine where you want Fizzy (see README) Follow the Docker or Kamal deployment guide for other setups
Where can I get fizzy?
The source code and installation instructions are on GitHub: https://github.com/basecamp/fizzy

Summary generated by AI from the project's README. GitHub stats refresh daily.

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