head to head · open source
authelia vs oauth2-client
authelia has 29,055 GitHub stars, 1,492 forks, 137 open issues and last shipped today. oauth2-client has 3,819 stars, 770 forks, 64 open issues and last shipped 7 days ago. authelia leads on adoption by 661% (29,055 vs 3,819 stars). authelia is written in Go under Apache-2.0; oauth2-client is written in PHP under MIT. authelia has attracted 5% as many forks as stars, oauth2-client 20%. authelia was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (authentication, oauth2), 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
| authelia | oauth2-client | |
|---|---|---|
| GitHub stars | ★ 29K | ★ 3.8K |
| License | Apache-2.0 | MIT |
| Written in | Go | PHP |
| Last push | 2026-09-23 | 2026-09-16 |
| Forks | ⑂ 1.5K | ⑂ 770 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick authelia if
- You weight community size — 29K 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 authelia
Authelia is an open source authentication and authorization server written in Go that provides single sign on and multi factor authentication for web applications through a web portal, aimed at self hosters and platform teams who need to protect services sitting behind a reverse proxy.
read the full authelia 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 authelia or oauth2-client more popular?
authelia has 29,055 GitHub stars and oauth2-client has 3,819. authelia has the larger community by that measure.
Are authelia and oauth2-client free?
Both are open source. authelia is licensed under Apache-2.0 and oauth2-client under MIT. Neither carries a licence fee.
What is the difference between authelia and oauth2-client?
authelia 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, authelia or oauth2-client?
Choose authelia if you want the larger community (29,055 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.