head to head · open source
oauth2-proxy vs casdoor
oauth2-proxy has 14,982 GitHub stars, 2,196 forks, 285 open issues and last shipped 2 days ago. casdoor has 14,434 stars, 1,818 forks, 97 open issues and last shipped yesterday. oauth2-proxy leads on adoption by 4% (14,982 vs 14,434 stars). oauth2-proxy is written in Go under MIT; casdoor is written in Go under Apache-2.0. oauth2-proxy has attracted 15% as many forks as stars, casdoor 13%. casdoor 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
| oauth2-proxy | casdoor | |
|---|---|---|
| GitHub stars | ★ 15K | ★ 14K |
| License | MIT | Apache-2.0 |
| Written in | Go | Go |
| Last push | 2026-09-18 | 2026-09-19 |
| Forks | ⑂ 2.2K | ⑂ 1.8K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick oauth2-proxy if
- You weight community size — 15K stars and counting
- You want the MIT license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick casdoor if
- You want the casdoor feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and casdoor fits your workflow better
About oauth2-proxy
OAuth2 Proxy is an open source, MIT licensed reverse proxy and middleware written in Go that puts OAuth2 and OpenID Connect authentication in front of web applications, aimed at operators and platform teams who need single sign on without adding auth code to every app.
read the full oauth2-proxy overview →
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 →
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Frequently asked questions
Is oauth2-proxy or casdoor more popular?
oauth2-proxy has 14,982 GitHub stars and casdoor has 14,434. oauth2-proxy has the larger community by that measure.
Are oauth2-proxy and casdoor free?
Both are open source. oauth2-proxy is licensed under MIT and casdoor under Apache-2.0. Neither carries a licence fee.
What is the difference between oauth2-proxy and casdoor?
oauth2-proxy is written in Go and casdoor in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, oauth2-proxy or casdoor?
Choose oauth2-proxy if you want the larger community (14,982 stars) or its MIT licence terms. Choose casdoor if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.