head to head · open source
OpenProject vs lotti
OpenProject has 16,933 GitHub stars, 3,676 forks, 224 open issues and last shipped yesterday. lotti has 1,205 stars, 120 forks, 4 open issues and last shipped yesterday. OpenProject leads on adoption by 1,305% (16,933 vs 1,205 stars). OpenProject is written in Ruby under GPL-3.0; lotti is written in Dart under GPL-3.0. OpenProject has attracted 22% as many forks as stars, lotti 10%. 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 | lotti | |
|---|---|---|
| GitHub stars | ★ 17K | ★ 1.2K |
| License | GPL-3.0 | GPL-3.0 |
| Written in | Ruby | Dart |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 3.7K | ⑂ 120 |
| 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 lotti if
- You want the lotti feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Dart
- You evaluated both and lotti 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 lotti
Lotti Discord for support A private logbook for the work you actually did. Lotti records what you meant to do and what actually happened, and keeps them as separate facts. Tasks, planned blocks, tracked time, voice notes, journal entries, habits, and health data live in a local database on your own devices, looked after by a staff of personal AI assistants: persistent agents that read what you record, keep the mess summarised, and propose the next step — while proposed changes wait for your approval. No server ever holds your data in readable form; sync is end to end encrypted, and the relay between your devices…
read the full lotti overview →
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Frequently asked questions
Is OpenProject or lotti more popular?
OpenProject has 16,933 GitHub stars and lotti has 1,205. OpenProject has the larger community by that measure.
Are OpenProject and lotti free?
Both are open source. OpenProject is licensed under GPL-3.0 and lotti under GPL-3.0. Neither carries a licence fee.
What is the difference between OpenProject and lotti?
OpenProject is written in Ruby and lotti in Dart. 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 lotti?
Choose OpenProject if you want the larger community (16,933 stars) or its GPL-3.0 licence terms. Choose lotti if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.