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ButtercupKeePassXC
Free

Free and open source, no longer developed.

 Free

Free and open source; donations optional

Windows, macOS, Linux Windows, macOS, Linux, Command line, Browser extension
  • Vaults are ordinary encrypted files you control, with no Buttercup account
  • Installers for Windows, macOS and Linux, plus a portable Windows build
  • Stores everything in an offline encrypted file with no remote servers
  • Runs on Windows, macOS and Linux with a companion browser extension supporting passkeys
  • 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
  • No official mobile app; desktop platforms only
  • No built-in sync service; the database file must be stored or synced by the user
Downloadable app Downloadable app, Browser extension
Open source Open source
License: GPL-3.0 License: GPL-2.0-only OR GPL-3.0-only
No account needed No account needed
Works offline Works offline

Checked September 26, 2026

Checked September 20, 2026

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