Vaultwarden is a unofficial Bitwarden compatible server written in Rust Templated by Selfhosters, used by many.  Featured in this video by @SpaceInvaderOne FAQ: Q: I get ` An error has occurred. Cannot read property 'importKey' of null` when trying to login. A: This is expected when trying to login over HTTP, especially in Chrome. This is a security measure by the browser, not a bug.