head to head · open source
openGym vs pocket-id
openGym has 18,854 GitHub stars, 2,487 forks, 109 open issues and last shipped yesterday. pocket-id has 9,906 stars, 348 forks, 98 open issues and last shipped yesterday. openGym leads on adoption by 90% (18,854 vs 9,906 stars). openGym is written in JavaScript under AGPL-3.0; pocket-id is written in Go under BSD-2-Clause. openGym has attracted 13% as many forks as stars, pocket-id 4%. openGym was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (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
| openGym | pocket-id | |
|---|---|---|
| GitHub stars | ★ 19K | ★ 9.9K |
| License | AGPL-3.0 | BSD-2-Clause |
| Written in | JavaScript | Go |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 2.5K | ⑂ 348 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick openGym if
- You weight community size — 19K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick pocket-id if
- You want the pocket-id feature set and don't need the biggest community
- You prefer the BSD-2-Clause license terms
- Your stack matches Go
- You evaluated both and pocket-id fits your workflow better
About openGym
A self hosted gym & body weight tracker you actually own. Plan your week, run guided workouts, track every set and your body weight over time — on your phone, synced across devices, behind your own passkey login. No account on someone else's server, no subscription, no ads. Just docker compose up . Home — today's workout & weight Guided workout — animated demos & sets Stats — heatmap, charts & PRs 🌐 opengym.duarte santos.ch · 📦 Source on GitHub · 🦊 GitLab mirror Screenshots, docs and the APK download live on the site. Want to poke at it first? The in browser demo is the real app with example data — no…
read the full openGym overview →
About pocket-id
Pocket ID Pocket ID is an easy to use OpenID Connect Certified™ and OAuth 2.0 provider that lets users sign in to your applications with passkeys. → Try out the Demo The goal of Pocket ID is to be a simple and easy to use. There are other self hosted OIDC and OAuth 2.0 providers like Keycloak or ORY Hydra but they are often too complex for simple use cases. Additionally, what makes Pocket ID special is that it only supports passkey authentication, which means you don’t need a password. Some people might not like this idea at first, but I believe passkeys are the future, and once you try them, you’ll love them…
read the full pocket-id overview →
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Frequently asked questions
Is openGym or pocket-id more popular?
openGym has 18,854 GitHub stars and pocket-id has 9,906. openGym has the larger community by that measure.
Are openGym and pocket-id free?
Both are open source. openGym is licensed under AGPL-3.0 and pocket-id under BSD-2-Clause. Neither carries a licence fee.
What is the difference between openGym and pocket-id?
openGym is written in JavaScript and pocket-id 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, openGym or pocket-id?
Choose openGym if you want the larger community (18,854 stars) or its AGPL-3.0 licence terms. Choose pocket-id if its feature set, stack or BSD-2-Clause licence fits better. Both are self-hostable.