head to head · open source
Planka vs Fizzy
Planka has 12,567 GitHub stars, 1,378 forks, 425 open issues and last shipped 3 days ago. Fizzy has 8,212 stars, 1,194 forks, 67 open issues and last shipped yesterday. Planka leads on adoption by 53% (12,567 vs 8,212 stars). Planka is written in JavaScript under a custom or non-standard licence; Fizzy is written in Ruby under a custom or non-standard licence. Planka has attracted 11% 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
| Planka | Fizzy | |
|---|---|---|
| GitHub stars | ★ 13K | ★ 8.2K |
| License | Custom / other | Custom / other |
| Written in | JavaScript | Ruby |
| Last push | 2026-09-17 | 2026-09-19 |
| Forks | ⑂ 1.4K | ⑂ 1.2K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Planka if
- You weight community size — 13K stars and counting
- You want the Custom / other license terms
- Your stack matches JavaScript
- 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 Planka
Planka is a self hosted Kanban board for project and task management. It lives in the open source project and work management ecosystem, with JavaScript as its implementation language, and it positions itself as an open alternative to Trello and Monday.com. The project provides a free Community edition for self hosting, while PLANKA Pro adds organization features and developer support.
read the full Planka overview →
About Fizzy
Fizzy is an open source kanban tool for tracking issues and ideas, published by 37signals as a Ruby on Rails application, and it is aimed at teams that want a fast, simple board together with the source code and the option to run that board on their own server.
read the full Fizzy overview →
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Frequently asked questions
Is Planka or Fizzy more popular?
Planka has 12,567 GitHub stars and Fizzy has 8,212. Planka has the larger community by that measure.
Are Planka and Fizzy free?
Neither Planka nor Fizzy declares a licence in this registry, so check each project's own repository before relying on either for a commercial use. Both are free to self-host.
What is the difference between Planka and Fizzy?
Planka is written in JavaScript 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, Planka or Fizzy?
Choose Planka if you want the larger community (12,567 stars) or its Custom / other licence terms. Choose Fizzy if its feature set, stack or Custom / other licence fits better. Both are self-hostable.