Bitwarden vs Vaultwarden

Bitwarden is an open-source password manager with a free plan and paid plans: Premium is $1.65 per month billed annually at $19.80, and Families is $3.99 per month for up to 6 users, billed annually. Its server repository is AGPL-3.0, with a separate Bitwarden License folder for commercial features. Bitwarden's pricing page lists self-hosting under the Enterprise plan.

Vaultwarden is a different project. Its repository describes it as an unofficial Bitwarden compatible server written in Rust, and an alternative implementation of the Bitwarden Client API, compatible with the official Bitwarden clients. Its README states: 'This project is not associated with Bitwarden or Bitwarden, Inc.' It is licensed AGPL-3.0.

That means you pair Vaultwarden's server with Bitwarden's own apps and extensions, and you run, secure and back up the server yourself. The README says the web vault needs HTTPS, recommends container images, and asks users to report bugs to the Vaultwarden project rather than to official Bitwarden support. It lists features such as organizations, Send, attachments and emergency access, and has no plans or prices of its own.

In short: Bitwarden costs little and is hosted for you, while Vaultwarden costs only what your own hosting costs but puts the maintenance, and the responsibility for backups, on you.