head to head · open source
hydra vs KeePassDX
hydra has 17,553 GitHub stars, 1,609 forks, 98 open issues and last shipped 2 months ago. KeePassDX has 7,340 stars, 403 forks, 541 open issues and last shipped 5 days ago. hydra leads on adoption by 139% (17,553 vs 7,340 stars). hydra is written in Go under Apache-2.0; KeePassDX is written in Kotlin under GPL-3.0. hydra has attracted 9% as many forks as stars, KeePassDX 5%. KeePassDX 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
| hydra | KeePassDX | |
|---|---|---|
| GitHub stars | ★ 18K | ★ 7.3K |
| License | Apache-2.0 | GPL-3.0 |
| Written in | Go | Kotlin |
| Last push | 2026-07-29 | 2026-09-15 |
| Forks | ⑂ 1.6K | ⑂ 403 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick hydra if
- You weight community size — 18K 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 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 hydra
Ory Hydra is an OpenID Certified OpenID Connect and OAuth 2.1 provider written in Go and licensed under Apache 2.0, built for teams that need standards compliant token issuance, client management, and consent flows while user accounts stay in their own existing identity system.
read the full hydra overview →
About KeePassDX
KeePassDX is a free, open source and ad free password and passkey manager for Android that keeps credentials in a single encrypted local database file in KeePass format and fills login forms through autofill and its own keyboard.
read the full KeePassDX overview →
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Frequently asked questions
Is hydra or KeePassDX more popular?
hydra has 17,553 GitHub stars and KeePassDX has 7,340. hydra has the larger community by that measure.
Are hydra and KeePassDX free?
Both are open source. hydra is licensed under Apache-2.0 and KeePassDX under GPL-3.0. Neither carries a licence fee.
What is the difference between hydra and KeePassDX?
hydra is written in Go 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, hydra or KeePassDX?
Choose hydra if you want the larger community (17,553 stars) or its Apache-2.0 licence terms. Choose KeePassDX if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.