head to head · open source
authelia vs openGym
authelia has 29,027 GitHub stars, 1,488 forks, 137 open issues and last shipped yesterday. openGym has 1,056 stars, 260 forks, 109 open issues and last shipped 2 days ago. authelia leads on adoption by 2,649% (29,027 vs 1,056 stars). authelia is written in Go under Apache-2.0; openGym is written in JavaScript under AGPL-3.0. authelia has attracted 5% as many forks as stars, openGym 25%. authelia was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (docker, passkeys), 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 | openGym | |
|---|---|---|
| GitHub stars | ★ 29K | ★ 1.1K |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Go | JavaScript |
| Last push | 2026-09-21 | 2026-09-20 |
| Forks | ⑂ 1.5K | ⑂ 260 |
| 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 openGym if
- You want the openGym feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches JavaScript
- You evaluated both and openGym 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 openGym
openGym is a self hosted, AGPL 3.0 gym and body weight tracker that runs on your own server, letting you plan weekly routines, log workouts with supersets, warm ups and cardio, and see which muscles are trained, fatigued or detrained — built for lifters and privacy minded self hosters who would rather run docker compose up than keep an account on someone else's service.
read the full openGym overview →
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Frequently asked questions
Is authelia or openGym more popular?
authelia has 29,027 GitHub stars and openGym has 1,056. authelia has the larger community by that measure.
Are authelia and openGym free?
Both are open source. authelia is licensed under Apache-2.0 and openGym under AGPL-3.0. Neither carries a licence fee.
What is the difference between authelia and openGym?
authelia is written in Go and openGym in JavaScript. 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 openGym?
Choose authelia if you want the larger community (29,027 stars) or its Apache-2.0 licence terms. Choose openGym if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.