head to head · open source
odysseus vs Fullmoon
odysseus has 87,371 GitHub stars, 907 forks, 1,233 open issues and last shipped 2 days ago. Fullmoon has 2,266 stars, 220 forks, 45 open issues and last shipped 1.4 years ago. odysseus leads on adoption by 3,756% (87,371 vs 2,266 stars). odysseus is written in Python under AGPL-3.0; Fullmoon is written in Swift under MIT. odysseus has attracted 1% as many forks as stars, Fullmoon 10%. odysseus 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
| odysseus | Fullmoon | |
|---|---|---|
| GitHub stars | ★ 87K | ★ 2.3K |
| License | AGPL-3.0 | MIT |
| Written in | Python | Swift |
| Last push | 2026-09-17 | 2025-05-05 |
| Forks | ⑂ 907 | ⑂ 220 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick odysseus if
- You weight community size — 87K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Fullmoon if
- You want the Fullmoon feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Swift
- You evaluated both and Fullmoon fits your workflow better
About odysseus
Odysseus is a self hosted AI workspace written in Python and released under the AGPL 3.0 or later licence, built for people who want chat, agents, research, documents, email, notes, tasks, and calendar in one deployment on infrastructure they control.
read the full odysseus overview →
About Fullmoon
Fullmoon is an iOS application for chatting with local large language models, built in Swift and released under the MIT license. It is optimized for Apple silicon and runs across iPhone, iPad, and Mac, with chat history stored locally on the device and a customizable interface. The project lives in the Apple ecosystem and depends on MLX Swift, Apple's array framework for machine learning research on Apple silicon.
read the full Fullmoon overview →
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Frequently asked questions
Is odysseus or Fullmoon more popular?
odysseus has 87,371 GitHub stars and Fullmoon has 2,266. odysseus has the larger community by that measure.
Are odysseus and Fullmoon free?
Both are open source. odysseus is licensed under AGPL-3.0 and Fullmoon under MIT. Neither carries a licence fee.
What is the difference between odysseus and Fullmoon?
odysseus is written in Python and Fullmoon in Swift. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, odysseus or Fullmoon?
Choose odysseus if you want the larger community (87,371 stars) or its AGPL-3.0 licence terms. Choose Fullmoon if its feature set, stack or MIT licence fits better. Both are self-hostable.