head to head · open source
Discourse vs nimforum
Discourse has 47,852 GitHub stars, 9,017 forks, 221 open issues and last shipped yesterday. nimforum has 785 stars, 70 forks, 129 open issues and last shipped 3 months ago. Discourse leads on adoption by 5,996% (47,852 vs 785 stars). Discourse is written in Ruby under GPL-2.0; nimforum is written in Nim under MIT. Discourse has attracted 19% as many forks as stars, nimforum 9%. Discourse was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (forum), 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
| Discourse | nimforum | |
|---|---|---|
| GitHub stars | ★ 48K | ★ 785 |
| License | GPL-2.0 | MIT |
| Written in | Ruby | Nim |
| Last push | 2026-09-17 | 2026-07-03 |
| Forks | ⑂ 9.0K | ⑂ 70 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Discourse if
- You weight community size — 48K stars and counting
- You want the GPL-2.0 license terms
- Your stack matches Ruby
- You value the larger contributor base for long-term maintenance
pick nimforum if
- You want the nimforum feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Nim
- You evaluated both and nimforum fits your workflow better
About Discourse
Discourse is a free, open source community discussion platform, built in Ruby on Rails and licensed under GPL 2.0, for organisations and communities that want complete control over how and where their forum is run rather than renting a hosted service.
read the full Discourse overview →
About nimforum
NimForum is a lightweight forum implementation written in the Nim programming language and positioned as an alternative to Discourse. It provides a single page application built with the Karax and Jester frameworks, while using SQLite as its database, and it is used by the Nim community at forum.nim lang.org.
read the full nimforum overview →
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Frequently asked questions
Is Discourse or nimforum more popular?
Discourse has 47,852 GitHub stars and nimforum has 785. Discourse has the larger community by that measure.
Are Discourse and nimforum free?
Both are open source. Discourse is licensed under GPL-2.0 and nimforum under MIT. Neither carries a licence fee.
What is the difference between Discourse and nimforum?
Discourse is written in Ruby and nimforum in Nim. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Discourse or nimforum?
Choose Discourse if you want the larger community (47,852 stars) or its GPL-2.0 licence terms. Choose nimforum if its feature set, stack or MIT licence fits better. Both are self-hostable.