head to head · open source
odysseus vs Ptero
odysseus has 94,935 GitHub stars, 1,862 forks, 1,233 open issues and last shipped yesterday. Ptero has 1,519 stars, 18 forks, 0 open issues and last shipped 6 days ago. odysseus leads on adoption by 6,150% (94,935 vs 1,519 stars). odysseus is written in Python under AGPL-3.0; Ptero is written in PHP under Apache-2.0. odysseus has attracted 2% as many forks as stars, Ptero 1%. 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 | Ptero | |
|---|---|---|
| GitHub stars | ★ 95K | ★ 1.5K |
| License | AGPL-3.0 | Apache-2.0 |
| Written in | Python | PHP |
| Last push | 2026-11-02 | 2026-10-28 |
| Forks | ⑂ 1.9K | ⑂ 18 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick odysseus if
- You weight community size — 95K 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 Ptero if
- You want the Ptero feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches PHP
- You evaluated both and Ptero fits your workflow better
About odysseus
A self hosted AI workspace for chat, agents, research, documents, email, notes, calendar, and local model workflows. Quick Start · Setup Guide · Contributing · Roadmap Quick Start dev is the default branch and gets the newest changes first. Use main if you want the more curated branch. Open when the containers are healthy. The first admin password is printed in docker compose logs odysseus . Native installs, GPU notes, Windows/macOS instructions, HTTPS, and configuration live in the setup guide. Features Chat + Agents — local/API models, tools, MCP, files, shell, skills, and memory. Cookbook — hardware aware…
read the full odysseus overview →
About Ptero
🚀 Ptero – Free, Multi Model AI Chat Platform Ptero is a free, open source AI chat platform that gives you instant access to multiple powerful language models through a single, clean interface. No signup is required, and it is designed for developers, students, and creators who value privacy and simplicity. Try it live: 💖 Sponsors We are incredibly grateful to our sponsors for their support in keeping Ptero free and accessible for everyone. ✨ Key Features Access Multiple AI Models : Choose from a wide range of models, including DeepSeek V4 , Llama 3.3 , Qwen , MiniMax , Mistral , and more. One Click Model…
read the full Ptero overview →
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Frequently asked questions
Is odysseus or Ptero more popular?
odysseus has 94,935 GitHub stars and Ptero has 1,519. odysseus has the larger community by that measure.
Are odysseus and Ptero free?
Both are open source. odysseus is licensed under AGPL-3.0 and Ptero under Apache-2.0. Neither carries a licence fee.
What is the difference between odysseus and Ptero?
odysseus is written in Python and Ptero in PHP. 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 Ptero?
Choose odysseus if you want the larger community (94,935 stars) or its AGPL-3.0 licence terms. Choose Ptero if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.