head to head · open source
Leantime vs Fizzy
Leantime has 11,958 GitHub stars, 1,169 forks, 328 open issues and last shipped 4 days ago. Fizzy has 8,283 stars, 1,212 forks, 67 open issues and last shipped yesterday. Leantime leads on adoption by 44% (11,958 vs 8,283 stars). Leantime is written in PHP under AGPL-3.0; Fizzy is written in Ruby under a custom or non-standard licence. Leantime has attracted 10% as many forks as stars, Fizzy 15%. Fizzy was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (kanban), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Leantime | Fizzy | |
|---|---|---|
| GitHub stars | ★ 12K | ★ 8.3K |
| License | AGPL-3.0 | Custom / other |
| Written in | PHP | Ruby |
| Last push | 2026-11-01 | 2026-11-04 |
| Forks | ⑂ 1.2K | ⑂ 1.2K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Leantime if
- You weight community size — 12K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches PHP
- You value the larger contributor base for long-term maintenance
pick Fizzy if
- You want the Fizzy feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches Ruby
- You evaluated both and Fizzy fits your workflow better
About Leantime
Leantime® ⭐ If you find Leantime useful, please star us on GitHub! ⭐ Leantime is an open source project management system for non project managers. We combine strategy, planning and execution while making it easy for everyone on the team to use. Built with ADHD, dyslexia and autism in mind. 🧠 💪 As simple as Trello but as feature rich as Jira 🔄 A perfect alternative to ClickUp, Monday, or Asana 🌐 🚀 Features yes, all of these features are included in the OSS version 📸 Screenshots ❗System Requirements PHP 8.2+ MySQL 8.0+ or MariaDB 10.6+ Apache or Nginx (IIS works with some modifications) PHP Extensions…
read the full Leantime overview →
About Fizzy
Fizzy This is the source code of Fizzy, the Kanban tracking tool for issues and ideas by 37signals. Running your own Fizzy instance If you want to run your own Fizzy instance, but don't need to change its code, you can use our pre built Docker image. You'll need access to a server on which you can run Docker, and you'll need to configure some options to customize your installation. You can find the details of how to do a Docker based deployment in our Docker deployment guide. If you want more flexibility to customize your Fizzy installation by changing its code, and deploy those changes to your server, then we…
read the full Fizzy overview →
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Frequently asked questions
Is Leantime or Fizzy more popular?
Leantime has 11,958 GitHub stars and Fizzy has 8,283. Leantime has the larger community by that measure.
Are Leantime and Fizzy free?
Both are open source. Leantime is licensed under AGPL-3.0, and Fizzy has no licence declared in this registry. Both are free to self-host.
What is the difference between Leantime and Fizzy?
Leantime is written in PHP and Fizzy in Ruby. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Leantime or Fizzy?
Choose Leantime if you want the larger community (11,958 stars) or its AGPL-3.0 licence terms. Choose Fizzy if its feature set, stack or Custom / other licence fits better. Both are self-hostable.