head to head · open source
Planka vs Fizzy
Planka has 12,666 GitHub stars, 1,397 forks, 425 open issues and last shipped 3 days ago. Fizzy has 8,283 stars, 1,212 forks, 67 open issues and last shipped yesterday. Planka leads on adoption by 53% (12,666 vs 8,283 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.
← all 20902 open source comparisons
Side by side
| Planka | Fizzy | |
|---|---|---|
| GitHub stars | ★ 13K | ★ 8.3K |
| License | Custom / other | Custom / other |
| Written in | JavaScript | Ruby |
| Last push | 2026-11-02 | 2026-11-04 |
| 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 Project mastering driven by fun Install · Demo · Docs · API · Cloud · Pro version PLANKA Pro When the whole team runs on PLANKA. Phones and tablets · five themes · a dashboard across every project · calendar, timeline and map views · cards on more than one board · templates · guest roles · SSO · PDF export. Self hosted exactly as you host it now, supported by the people who build it. Pro upgrades an existing Community installation in place — your database, your volume, your data. It is a real migration rather than a new image: Pro adds a Valkey service and a one off schema promote. The promote accepts…
read the full Planka 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 →
More in Business Software
Related comparisons
More Project & Work Management projects
Compare either of these against the rest of the Project & Work Management field.
Frequently asked questions
Is Planka or Fizzy more popular?
Planka has 12,666 GitHub stars and Fizzy has 8,283. 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 (12,666 stars) or its Custom / other licence terms. Choose Fizzy if its feature set, stack or Custom / other licence fits better. Both are self-hostable.