head to head · open source
oauth2-proxy vs oauth2-client
oauth2-proxy has 14,989 GitHub stars, 2,197 forks, 285 open issues and last shipped yesterday. oauth2-client has 3,819 stars, 770 forks, 64 open issues and last shipped 6 days ago. oauth2-proxy leads on adoption by 292% (14,989 vs 3,819 stars). oauth2-proxy is written in Go under MIT; oauth2-client is written in PHP under MIT. oauth2-proxy has attracted 15% as many forks as stars, oauth2-client 20%. oauth2-proxy was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (oauth2, sso), 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
| oauth2-proxy | oauth2-client | |
|---|---|---|
| GitHub stars | ★ 15K | ★ 3.8K |
| License | MIT | MIT |
| Written in | Go | PHP |
| Last push | 2026-09-21 | 2026-09-16 |
| Forks | ⑂ 2.2K | ⑂ 770 |
| 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 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 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 oauth2-client
league/oauth2 client is an MIT licensed PHP library maintained by The PHP League that provides a reusable base for integrating applications with any OAuth 2.0 service provider, aimed at PHP developers who need to add "Connect with Facebook/Google" style login and token flows without implementing RFC 6749 from scratch.
read the full oauth2-client overview →
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Frequently asked questions
Is oauth2-proxy or oauth2-client more popular?
oauth2-proxy has 14,989 GitHub stars and oauth2-client has 3,819. oauth2-proxy has the larger community by that measure.
Are oauth2-proxy and oauth2-client free?
Both are open source. oauth2-proxy is licensed under MIT and oauth2-client under MIT. Neither carries a licence fee.
What is the difference between oauth2-proxy and oauth2-client?
oauth2-proxy 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, oauth2-proxy or oauth2-client?
Choose oauth2-proxy if you want the larger community (14,989 stars) or its MIT licence terms. Choose oauth2-client if its feature set, stack or MIT licence fits better. Both are self-hostable.