head to head · open source
casbin vs oauth2-client
casbin has 20,482 GitHub stars, 1,767 forks, 38 open issues and last shipped 4 days ago. oauth2-client has 3,819 stars, 770 forks, 64 open issues and last shipped 2 days ago. casbin leads on adoption by 436% (20,482 vs 3,819 stars). casbin is written in Go under Apache-2.0; oauth2-client is written in PHP under MIT. casbin has attracted 9% as many forks as stars, oauth2-client 20%. oauth2-client was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (authentication, authorization), 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
| casbin | oauth2-client | |
|---|---|---|
| GitHub stars | ★ 20K | ★ 3.8K |
| License | Apache-2.0 | MIT |
| Written in | Go | PHP |
| Last push | 2026-11-04 | 2026-11-06 |
| Forks | ⑂ 1.8K | ⑂ 770 |
| 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-client if
- You want the oauth2-client feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches PHP
- You evaluated both and oauth2-client fits your workflow better
About casbin
Apache Casbin ==== News : still worry about how to write the correct Apache Casbin policy? Apache Casbin online editor is coming to help! Try it at: Apache Casbin is a powerful and efficient open source access control library for Golang projects. It provides support for enforcing authorization based on various access control models. All the languages supported by Apache Casbin: Table of contents Supported models How it works? Features Installation Documentation Online editor Tutorials Get started Policy management Policy persistence Policy consistence between multiple nodes Role manager Benchmarks Examples…
read the full casbin overview →
About oauth2-client
OAuth 2.0 Client This package provides a base for integrating with OAuth 2.0 service providers. The OAuth 2.0 login flow, seen commonly around the web in the form of "Connect with Facebook/Google/etc." buttons, is a common integration added to web applications, but it can be tricky and tedious to do right. To help, we've created the league/oauth2 client package, which provides a base for integrating with various OAuth 2.0 providers, without overburdening your application with the concerns of RFC 6749. This OAuth 2.0 client library will work with any OAuth 2.0 provider that conforms to the OAuth 2.0 Authorization…
read the full oauth2-client overview →
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Frequently asked questions
Is casbin or oauth2-client more popular?
casbin has 20,482 GitHub stars and oauth2-client has 3,819. casbin has the larger community by that measure.
Are casbin and oauth2-client free?
Both are open source. casbin is licensed under Apache-2.0 and oauth2-client under MIT. Neither carries a licence fee.
What is the difference between casbin and oauth2-client?
casbin is written in Go and oauth2-client 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, casbin or oauth2-client?
Choose casbin if you want the larger community (20,482 stars) or its Apache-2.0 licence terms. Choose oauth2-client if its feature set, stack or MIT licence fits better. Both are self-hostable.