head to head · open source
casdoor vs os
casdoor has 14,518 GitHub stars, 1,831 forks, 97 open issues and last shipped yesterday. os has 803 stars, 26 forks, 46 open issues and last shipped yesterday. casdoor leads on adoption by 1,708% (14,518 vs 803 stars). casdoor is written in Go under Apache-2.0; os is written in TypeScript under MIT. casdoor has attracted 13% as many forks as stars, os 3%. os was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (agentic-ai, llm), so they are genuine substitutes rather than adjacent tools.
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
| casdoor | os | |
|---|---|---|
| GitHub stars | ★ 15K | ★ 803 |
| License | Apache-2.0 | MIT |
| Written in | Go | TypeScript |
| Last push | 2026-10-06 | 2026-10-06 |
| Forks | ⑂ 1.8K | ⑂ 26 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick casdoor if
- You weight community size — 15K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick os if
- You want the os feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and os fits your workflow better
About casdoor
Casdoor is an open source, self hosted identity and access management platform written in Go and licensed under Apache 2.0, which provides a single sign on and authentication server with a web console for teams that want to own their user directory rather than delegate it to a hosted provider.
read the full casdoor overview →
About os
ibl.ai/os is an MIT licensed, self hostable open source platform for building, deploying, and managing customizable AI agents across web, desktop, mobile, and browser, aimed at organizations that want to own their code and data.
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Frequently asked questions
Is casdoor or os more popular?
casdoor has 14,518 GitHub stars and os has 803. casdoor has the larger community by that measure.
Are casdoor and os free?
Both are open source. casdoor is licensed under Apache-2.0 and os under MIT. Neither carries a licence fee.
What is the difference between casdoor and os?
casdoor is written in Go and os in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, casdoor or os?
Choose casdoor if you want the larger community (14,518 stars) or its Apache-2.0 licence terms. Choose os if its feature set, stack or MIT licence fits better. Both are self-hostable.