Passman Premium by JPITSG

Passman Premium connects Firefox to your own Nextcloud server running the <a href="https://apps.nextcloud.com/apps/passman">Passman app</a>, keeping your passwords on infrastructure you control. It is an actively maintained fork of the dormant Nextcloud Passman web extension, carried forward with current security, privacy, localization and accessibility work.
<b>Features</b><ul><li><b>Client-side encryption</b> — credentials are encrypted in your browser (AES-256-CCM) before they ever reach your server; your vault password never leaves your device.</li><li><b>Autofill</b> with origin-scoped matching (scheme, host and port), an in-field password picker, a right-click menu, and save/update prompts for new or changed logins — including change-password forms.</li><li><b>Password generator</b> with configurable character classes; custom fields and OTP/TOTP codes supported.</li><li><b>Multiple Nextcloud accounts</b> and shared team credentials.</li><li><b>Themes</b> (system / light / dark), 46 languages, and a keyboard-accessible UI.</li><li><b>Private by design</b> — HTTPS-only server connections; no analytics, no telemetry, no third-party data flows. Your data goes only to the Nextcloud server you configure.</li>
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<b>Requirements:</b> Firefox 140+ (desktop) and a Nextcloud server reachable over HTTPS with the Passman app installed.
Free software, licensed under the GNU AGPL v3.