head to head · open source
casbin vs oauth2-proxy
casbin has 20,399 GitHub stars, 1,756 forks, 38 open issues and last shipped 9 days ago. oauth2-proxy has 14,982 stars, 2,196 forks, 285 open issues and last shipped 2 days ago. casbin leads on adoption by 36% (20,399 vs 14,982 stars). casbin is written in Go under Apache-2.0; oauth2-proxy is written in Go under MIT. casbin has attracted 9% as many forks as stars, oauth2-proxy 15%. oauth2-proxy 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.
← all 20902 open source comparisons
Side by side
| casbin | oauth2-proxy | |
|---|---|---|
| GitHub stars | ★ 20K | ★ 15K |
| License | Apache-2.0 | MIT |
| Written in | Go | Go |
| Last push | 2026-09-11 | 2026-09-18 |
| Forks | ⑂ 1.8K | ⑂ 2.2K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick casbin if
- You weight community size — 20K 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 oauth2-proxy if
- You want the oauth2-proxy feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and oauth2-proxy fits your workflow better
About casbin
Apache Casbin is an Apache licensed authorization library for Go that helps developers enforce access control models such as ACL, RBAC, and ABAC inside their own applications rather than in a separate service.
read the full casbin overview →
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 →
More in Security & Privacy
Related comparisons
More Identity & Access Management (IAM) projects
Compare either of these against the rest of the Identity & Access Management (IAM) field.
Frequently asked questions
Is casbin or oauth2-proxy more popular?
casbin has 20,399 GitHub stars and oauth2-proxy has 14,982. casbin has the larger community by that measure.
Are casbin and oauth2-proxy free?
Both are open source. casbin is licensed under Apache-2.0 and oauth2-proxy under MIT. Neither carries a licence fee.
What is the difference between casbin and oauth2-proxy?
casbin is written in Go and oauth2-proxy 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, casbin or oauth2-proxy?
Choose casbin if you want the larger community (20,399 stars) or its Apache-2.0 licence terms. Choose oauth2-proxy if its feature set, stack or MIT licence fits better. Both are self-hostable.