head to head · open source
authelia vs oauth2-proxy
authelia has 29,014 GitHub stars, 1,485 forks, 137 open issues and last shipped today. oauth2-proxy has 14,978 stars, 2,196 forks, 285 open issues and last shipped yesterday. authelia leads on adoption by 94% (29,014 vs 14,978 stars). authelia is written in Go under Apache-2.0; oauth2-proxy is written in Go under MIT. authelia has attracted 5% as many forks as stars, oauth2-proxy 15%. authelia was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (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-proxy | |
|---|---|---|
| GitHub stars | ★ 29K | ★ 15K |
| License | Apache-2.0 | MIT |
| Written in | Go | Go |
| Last push | 2026-09-19 | 2026-09-18 |
| Forks | ⑂ 1.5K | ⑂ 2.2K |
| 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-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 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-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 →
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Frequently asked questions
Is authelia or oauth2-proxy more popular?
authelia has 29,014 GitHub stars and oauth2-proxy has 14,978. authelia has the larger community by that measure.
Are authelia and oauth2-proxy free?
Both are open source. authelia is licensed under Apache-2.0 and oauth2-proxy under MIT. Neither carries a licence fee.
What is the difference between authelia and oauth2-proxy?
authelia 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, authelia or oauth2-proxy?
Choose authelia if you want the larger community (29,014 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.