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Ferdium vs Caprine: catalog facts
Ferdium	Caprine
Free Free and open source under Apache 2.0. Unlike Franz, the project states it does not…	Free The software is free under its open-source licence. Hosting, hardware and external…
Windows, macOS, Linux	Windows, macOS, Linux
Hundreds of services supported, with workspaces to group them No paid account or usage restrictions, unlike the Franz it forked from	It adds a dark theme, keyboard shortcuts, custom styles and privacy options such as hiding typing indicators and…
Each service is a web view, so memory use grows quickly with many services Service integrations break when a provider changes its web app	It is an unofficial wrapper around the Messenger web app, so Facebook changes can break it, and the…
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: MIT
No account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 22, 2026

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