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Otter BrowserSeaMonkey
Free

The open-source software is available without a license fee. Hosting, hardware and…

 Free

The software is free under its open-source licence. Hosting, hardware and external…

Windows, Linux Windows, macOS, Linux
  • Brings traditional desktop browser controls into a Qt application.
  • It is the continuation of the old Mozilla Application Suite, so browsing, mail, news and page editing live…
  • Some planned features remain unfinished.
  • It tracks an older Firefox codebase, so web compatibility and security hardening trail the current browsers.
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0 License: MPL-2.0
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 22, 2026

Checked September 22, 2026

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