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Padloc vs Buttercup: catalog facts
Padloc	Buttercup
Freemium The software is open source and self-hostable. The hosted service has free and paid tiers.	Free Free and open source, no longer developed.
Windows, macOS, Linux, Android, iOS, Web, Self-hosted, Browser extension	Windows, macOS, Linux
The server is open source, so the whole stack can be self-hosted Clean interface across desktop, mobile and browser	Vaults are ordinary encrypted files you control, with no Buttercup account Installers for Windows, macOS and Linux, plus a portable Windows build
Smaller ecosystem and slower development than the market leaders Advanced sharing and organisation features need a paid plan	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, Self-hosted, Hosted service, Browser extension	Downloadable app
Open source	Open source
License: AGPL-3.0	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.