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KeePassXCButtercup
Free

Free and open source; donations optional

 Free

Free and open source, no longer developed.

Windows, macOS, Linux, Command line, Browser extension Windows, macOS, Linux
  • Stores everything in an offline encrypted file with no remote servers
  • Runs on Windows, macOS and Linux with a companion browser extension supporting passkeys
  • Vaults are ordinary encrypted files you control, with no Buttercup account
  • Installers for Windows, macOS and Linux, plus a portable Windows build
  • No official mobile app; desktop platforms only
  • No built-in sync service; the database file must be stored or synced by the user
  • The project has ended; no updates or security fixes will follow the September 2024 release
  • Issues and pull requests are ignored, so bugs will not be fixed
Downloadable app, Browser extension Downloadable app
Open source Open source
License: GPL-2.0-only OR GPL-3.0-only License: GPL-3.0
No account needed No account needed
Works offline Works offline

Checked September 20, 2026

Checked September 26, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.