head to head · open source
odysseus vs AGenUI
odysseus has 87,371 GitHub stars, 907 forks, 1,233 open issues and last shipped 2 days ago. AGenUI has 1,153 stars, 167 forks, 7 open issues and last shipped 2 days ago. odysseus leads on adoption by 7,478% (87,371 vs 1,153 stars). odysseus is written in Python under AGPL-3.0; AGenUI is written in C++ under Apache-2.0. odysseus has attracted 1% as many forks as stars, AGenUI 14%. 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 | AGenUI | |
|---|---|---|
| GitHub stars | ★ 87K | ★ 1.2K |
| License | AGPL-3.0 | Apache-2.0 |
| Written in | Python | C++ |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 907 | ⑂ 167 |
| 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 AGenUI if
- You want the AGenUI feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches C++
- You evaluated both and AGenUI 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 AGenUI
AGenUI is a native SDK for rendering generative user interfaces on mobile devices across iOS, Android, and HarmonyOS. It is built on, and fully implements, the A2UI v0.9 protocol open sourced by Google, and it sits in the AI interaction and interface layer of the ecosystem: the LLM produces structured component descriptions, which AGenUI receives as streaming data and turns into live native UI. Under the hood, a shared C++ core engine dispatches the component protocol, while three separate platform rendering engines draw the result using each operating system's own UI capabilities. The project is licensed under A…
read the full AGenUI overview →
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Frequently asked questions
Is odysseus or AGenUI more popular?
odysseus has 87,371 GitHub stars and AGenUI has 1,153. odysseus has the larger community by that measure.
Are odysseus and AGenUI free?
Both are open source. odysseus is licensed under AGPL-3.0 and AGenUI under Apache-2.0. Neither carries a licence fee.
What is the difference between odysseus and AGenUI?
odysseus is written in Python and AGenUI in C++. 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 AGenUI?
Choose odysseus if you want the larger community (87,371 stars) or its AGPL-3.0 licence terms. Choose AGenUI if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.