Spectre vs Vaultwarden
A side-by-side comparison of two self-hosted password managers options — licensing, setup difficulty, resource needs, and what each one replaces.
Vaultwarden
Lightweight Bitwarden-compatible password server
| Feature | Spectre | Vaultwarden |
|---|---|---|
| Deploy effort | Read-the-docs project | ≈5-minute setup |
| Category | Password Managers | Password Managers |
| License | GPL-3.0 | AGPL-3.0 |
| Language | C | Rust |
| Setup difficulty | Medium | Easy |
| Min. RAM | 64 MB | 128 MB |
| Deployment | binary, source | docker |
| GitHub stars | ★ 200 | ★ 68,080 |
| First released | 2012 | 2018 |
| Replaces | 1Password, LastPass | 1Password, LastPass, Dashlane |
What are Spectre and Vaultwarden?
Spectre
Spectre, the successor to Master Password, is an open-source stateless password manager. It derives strong, unique passwords from your name and a master password rather than storing them in a vault.
- Deterministic password derivation
- No vault to store or sync
- Cross-platform clients
- Works fully offline
Vaultwarden
Vaultwarden is a lightweight, unofficial Bitwarden-compatible server written in Rust that works with all official Bitwarden clients. It targets self-hosters who want Bitwarden without heavy resource use. It is deployed via Docker.
- Compatible with all Bitwarden clients
- Tiny resource footprint
- Organizations and sharing
- Includes premium-equivalent features
Spectre vs Vaultwarden: key differences
Spectre is written in C, while Vaultwarden is built with Rust. Licensing differs — GPL-3.0 for Spectre versus AGPL-3.0 for Vaultwarden. Spectre is the lighter option, starting around 64 MB of RAM against 128 MB for Vaultwarden. Spectre is the more established project (first released 2012), while Vaultwarden arrived in 2018. Vaultwarden has the considerably larger community, at 68,080 GitHub stars versus 200. Vaultwarden lists first-class Docker deployment; Spectre does not.
Why pick each one
Choose Spectre if…
- Nothing to back up
- Stateless by design
Watch out for
- Niche project
- Hard to change individual passwords
Choose Vaultwarden if…
- Extremely lightweight
- Works with official apps
- Easy to deploy
Watch out for
- Unofficial, community project
- Self-hosting security is on you
Frequently asked questions
Is Spectre or Vaultwarden better?
Vaultwarden is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider Spectre if its specific feature set fits your needs better.
Are Spectre and Vaultwarden free and open-source?
Yes. Spectre is licensed under GPL-3.0 and Vaultwarden under AGPL-3.0. Both can be self-hosted at no software cost.
Can I run Spectre and Vaultwarden with Docker?
Spectre: check the project docs for container support. Vaultwarden: yes.
Which is lighter on resources, Spectre or Vaultwarden?
Spectre has the smaller minimum footprint at 64 MB of RAM, compared to about 128 MB for Vaultwarden. Real-world usage depends on library size, user count, and enabled features.