head to head · open source
SuperTokens vs openGym
SuperTokens has 15,333 GitHub stars, 788 forks, 155 open issues and last shipped 2 days ago. openGym has 15,277 stars, 2,008 forks, 109 open issues and last shipped yesterday. SuperTokens leads on adoption by 0% (15,333 vs 15,277 stars). SuperTokens is written in Java under a custom or non-standard licence; openGym is written in JavaScript under AGPL-3.0. SuperTokens has attracted 5% as many forks as stars, openGym 13%. openGym was the more recently maintained of the two, and both are self-hostable with no licence fee.
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
| SuperTokens | openGym | |
|---|---|---|
| GitHub stars | ★ 15K | ★ 15K |
| License | Custom / other | AGPL-3.0 |
| Written in | Java | JavaScript |
| Last push | 2026-10-23 | 2026-10-24 |
| Forks | ⑂ 788 | ⑂ 2.0K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick SuperTokens if
- You weight community size — 15K stars and counting
- You want the Custom / other license terms
- Your stack matches Java
- 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 SuperTokens
Open Source auth provider Add secure login and session management to your apps. SDKs available for popular languages and front end frameworks e.g. Node.js, Go, Python, React.js, React Native, Vanilla JS, etc. Supertokens architecture is optimized to add secure authentication for your users without compromising on user and developer experience Three building blocks of SuperTokens architecture 1. Frontend SDK: Manages session tokens and renders login UI widgets 2. Backend SDK: Provides APIs for sign up, sign in, signout, session refreshing, etc. Your Frontend will talk to these APIs 3. SuperTokens Core: The HTTP…
read the full SuperTokens overview →
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 →
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Frequently asked questions
Is SuperTokens or openGym more popular?
SuperTokens has 15,333 GitHub stars and openGym has 15,277. SuperTokens has the larger community by that measure.
Are SuperTokens and openGym free?
Both are open source. SuperTokens has no licence declared in this registry, and openGym is licensed under AGPL-3.0. Both are free to self-host.
What is the difference between SuperTokens and openGym?
SuperTokens is written in Java 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, SuperTokens or openGym?
Choose SuperTokens if you want the larger community (15,333 stars) or its Custom / other licence terms. Choose openGym if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.