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Enpass vs Buttercup: catalog facts
Enpass	Buttercup
Paid A paid subscription or one-time licence is required. A limited free tier exists on mobile.	Free Free and open source, no longer developed.
Windows, macOS, Linux, Android, iOS, Browser extension	Windows, macOS, Linux
The vendor never holds your vault; sync goes through storage you choose One-time purchase option instead of a subscription	Vaults are ordinary encrypted files you control, with no Buttercup account Installers for Windows, macOS and Linux, plus a portable Windows build
Sharing and recovery are weaker because there is no vendor-held vault Closed source	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
Closed source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 26, 2026

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