head to head · open source
odysseus vs errbot
odysseus has 87,371 GitHub stars, 907 forks, 1,233 open issues and last shipped 2 days ago. errbot has 3,306 stars, 624 forks, 45 open issues and last shipped 1 months ago. odysseus leads on adoption by 2,543% (87,371 vs 3,306 stars). odysseus is written in Python under AGPL-3.0; errbot is written in Python under GPL-3.0. odysseus has attracted 1% as many forks as stars, errbot 19%. 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 | errbot | |
|---|---|---|
| GitHub stars | ★ 87K | ★ 3.3K |
| License | AGPL-3.0 | GPL-3.0 |
| Written in | Python | Python |
| Last push | 2026-09-17 | 2026-08-17 |
| Forks | ⑂ 907 | ⑂ 624 |
| 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 errbot if
- You want the errbot feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Python
- You evaluated both and errbot 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 errbot
Errbot is a chatbot daemon written in Python and released under the GPL 3.0 licence that connects to a chat service and lets people start scripts, plugins and operational tasks directly from the conversation, aimed at developers and operations teams who want ChatOps inside the chat tools they already use.
read the full errbot overview →
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Frequently asked questions
Is odysseus or errbot more popular?
odysseus has 87,371 GitHub stars and errbot has 3,306. odysseus has the larger community by that measure.
Are odysseus and errbot free?
Both are open source. odysseus is licensed under AGPL-3.0 and errbot under GPL-3.0. Neither carries a licence fee.
What is the difference between odysseus and errbot?
odysseus is written in Python and errbot in Python. 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 errbot?
Choose odysseus if you want the larger community (87,371 stars) or its AGPL-3.0 licence terms. Choose errbot if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.