head to head · open source
OpenProject vs Redmine
OpenProject has 16,933 GitHub stars, 3,676 forks, 224 open issues and last shipped yesterday. Redmine has 6,069 stars, 2,473 forks, 3 open issues and last shipped yesterday. OpenProject leads on adoption by 179% (16,933 vs 6,069 stars). OpenProject is written in Ruby under GPL-3.0; Redmine is written in Ruby under a custom or non-standard licence. OpenProject has attracted 22% as many forks as stars, Redmine 41%. OpenProject was the more recently maintained of the two, and both are self-hostable with no licence fee.
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
| OpenProject | Redmine | |
|---|---|---|
| GitHub stars | ★ 17K | ★ 6.1K |
| License | GPL-3.0 | Custom / other |
| Written in | Ruby | Ruby |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 3.7K | ⑂ 2.5K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick OpenProject if
- You weight community size — 17K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches Ruby
- You value the larger contributor base for long-term maintenance
pick Redmine if
- You want the Redmine feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches Ruby
- You evaluated both and Redmine fits your workflow better
About OpenProject
OpenProject We empower teams to achieve great things together for the good of society. OpenProject is a web based open source project management software for teams and organizations that require transparency, flexibility, and data sovereignty. Manage projects, portfolios, products, tasks, bugs, agile workflows, roadmaps, and team collaboration in a single platform. OpenProject can be self hosted and is designed for organizations looking for an open source enterprise ready alternative to tools such as Jira, MS Project, Monday, Asana, YouTrack while maintaining full control over their data and infrastructure…
read the full OpenProject overview →
About Redmine
= Redmine Redmine is a flexible project management web application written using Ruby on Rails framework. More details can be found in the doc directory or on the official website
read the full Redmine overview →
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Frequently asked questions
Is OpenProject or Redmine more popular?
OpenProject has 16,933 GitHub stars and Redmine has 6,069. OpenProject has the larger community by that measure.
Are OpenProject and Redmine free?
Both are open source. OpenProject is licensed under GPL-3.0, and Redmine has no licence declared in this registry. Both are free to self-host.
What is the difference between OpenProject and Redmine?
OpenProject is written in Ruby and Redmine 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, OpenProject or Redmine?
Choose OpenProject if you want the larger community (16,933 stars) or its GPL-3.0 licence terms. Choose Redmine if its feature set, stack or Custom / other licence fits better. Both are self-hostable.