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Bitwarden vs Buttercup: catalog facts
Bitwarden	Buttercup
Freemium Free tier; Premium is $1.65/month billed annually, Families $3.99/month; Teams and…	Free Free and open source, no longer developed.
Windows, macOS, Linux, Android, iOS, Web, Browser extension, Command line, Self-hosted	Windows, macOS, Linux
Clients for browsers, desktop, mobile, web and CLI with cloud sync Free tier includes unlimited devices and passwords, passkeys and Bitwarden Send	Vaults are ordinary encrypted files you control, with no Buttercup account Installers for Windows, macOS and Linux, plus a portable Windows build
Offline use is read-only; items cannot be added or edited without a connection F-Droid build has no push notifications, so vault sync is manual	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, Web application, Browser extension, Hosted service, Self-hosted	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: GPL-3.0
Account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked September 26, 2026

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