Vaultwarden

Vaultwarden (formerly bitwarden_rs) is a community-built, unofficial reimplementation of the Bitwarden server API in Rust. Because it speaks the same API as the official server, every official Bitwarden client, browser extensions, desktop apps, mobile apps, and the CLI, works against it with no changes. The draw is resource efficiency: the official server is a .NET stack with MSSQL and multiple services that wants 1 to 2 GB of RAM at idle, while Vaultwarden ships as a single binary in one Docker container idling around 50 MB, which is why it runs happily on a Raspberry Pi.

Despite the footprint, it implements virtually the full server feature set: organizations, collections, user management, two-step login, emergency access, sends, and TOTP/authenticator storage. A 2026 comparison put it at 35,000-plus GitHub stars, which is genuine community trust. The caveat is the word unofficial: Bitwarden does not support it, compatibility with new client features can lag official releases, and teams with strict support requirements should evaluate their risk tolerance. For homelabs and small teams, it is the fastest path to a working shared vault.

Run docker run -d --name vaultwarden -v /vw-data/:/data/ --restart unless-stopped -p 80:80 vaultwarden/server:latest, open the web vault, create your account, then point any official Bitwarden client at your server URL in its settings.