head to head · open source
openGym vs KeePassDX
openGym has 18,854 GitHub stars, 2,487 forks, 109 open issues and last shipped yesterday. KeePassDX has 7,601 stars, 423 forks, 541 open issues and last shipped 2 days ago. openGym leads on adoption by 148% (18,854 vs 7,601 stars). openGym is written in JavaScript under AGPL-3.0; KeePassDX is written in Kotlin under GPL-3.0. openGym has attracted 13% as many forks as stars, KeePassDX 6%. 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 | KeePassDX | |
|---|---|---|
| GitHub stars | ★ 19K | ★ 7.6K |
| License | AGPL-3.0 | GPL-3.0 |
| Written in | JavaScript | Kotlin |
| Last push | 2026-11-02 | 2026-11-01 |
| Forks | ⑂ 2.5K | ⑂ 423 |
| 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 KeePassDX if
- You want the KeePassDX feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Kotlin
- You evaluated both and KeePassDX 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 KeePassDX
Android KeePassDX Lightweight password safe and manager for Android , KeePassDX allows editing encrypted data in a single file in KeePass format and fill in the forms in a secure way. Features Passkeys for authentication and local storage of private keys . Biometric recognition for fast unlocking (fingerprint / face unlock / …). One Time Password management (HOTP / TOTP) for two factor authentication (2FA). Autofill for easy form filling with passwords. Magikeyboard to efficiently fill in any field. Create encrypted database files . Organisation of credentials by entry and in group trees. Allows opening and…
read the full KeePassDX overview →
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Frequently asked questions
Is openGym or KeePassDX more popular?
openGym has 18,854 GitHub stars and KeePassDX has 7,601. openGym has the larger community by that measure.
Are openGym and KeePassDX free?
Both are open source. openGym is licensed under AGPL-3.0 and KeePassDX under GPL-3.0. Neither carries a licence fee.
What is the difference between openGym and KeePassDX?
openGym is written in JavaScript and KeePassDX in Kotlin. 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 KeePassDX?
Choose openGym if you want the larger community (18,854 stars) or its AGPL-3.0 licence terms. Choose KeePassDX if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.