head to head · open source
vaultwarden vs 2FAS
vaultwarden has 70,127 GitHub stars, 3,400 forks, 83 open issues and last shipped yesterday. 2FAS has 1,561 stars, 133 forks, 125 open issues and last shipped 3 days ago. vaultwarden leads on adoption by 4,392% (70,127 vs 1,561 stars). vaultwarden is written in Rust under AGPL-3.0; 2FAS is written in Kotlin under GPL-3.0. vaultwarden has attracted 5% as many forks as stars, 2FAS 9%. vaultwarden 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
| vaultwarden | 2FAS | |
|---|---|---|
| GitHub stars | ★ 70K | ★ 1.6K |
| License | AGPL-3.0 | GPL-3.0 |
| Written in | Rust | Kotlin |
| Last push | 2026-11-02 | 2026-10-31 |
| Forks | ⑂ 3.4K | ⑂ 133 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick vaultwarden if
- You weight community size — 70K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick 2FAS if
- You want the 2FAS 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 2FAS fits your workflow better
About vaultwarden
An alternative server implementation of the Bitwarden Client API, written in Rust and compatible with official Bitwarden clients [disclaimer], perfect for self hosted deployment where running the official resource heavy service might not be ideal. %3D'svg'%5D%2F %5Blocal name()%3D'g'%5D%5B2%5D%2F %5Blocal name()%3D'text'%5D%5B4%5D&style=flat square&logo=rust&label=dependencies&color=005AA4) [!IMPORTANT] When using this server, please report any bugs or suggestions directly to us (see Get in touch), regardless of whatever clients you are using (mobile, desktop, browser...). DO NOT use the official Bitwarden…
read the full vaultwarden overview →
About 2FAS
Open Source 2FAS for Android This is the official Android app for the Open Source 2FAS project. What is 2FAS? 2FAS (Two Factor Authentication Service) is a user authentication method that provides an additional layer of security for online accounts. In addition to a username and password, 2FAS uses a second factor, such as a one time password (OTP) shown on a user's phone, to verify a user's identity. This helps prevent unauthorized access to accounts, even if a password is compromised. Features Support for time based one time passwords (TOTP) and HMAC based on time passwords (HOTP) Compatible with any service…
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Frequently asked questions
Is vaultwarden or 2FAS more popular?
vaultwarden has 70,127 GitHub stars and 2FAS has 1,561. vaultwarden has the larger community by that measure.
Are vaultwarden and 2FAS free?
Both are open source. vaultwarden is licensed under AGPL-3.0 and 2FAS under GPL-3.0. Neither carries a licence fee.
What is the difference between vaultwarden and 2FAS?
vaultwarden is written in Rust and 2FAS 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, vaultwarden or 2FAS?
Choose vaultwarden if you want the larger community (70,127 stars) or its AGPL-3.0 licence terms. Choose 2FAS if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.