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Firefox vs Konqueror: catalog facts
Firefox	Konqueror
Free Free software from a non-profit-owned foundation. Mozilla sells separate subscription…	Free Free and open source as part of KDE Gear.
Windows, macOS, Linux, Android, iOS	Linux
Total Cookie Protection stops cookies following you between sites An engine that is not Chromium, which matters for the health of the web	Browser, file manager and FTP/SFTP client in one program Embedded previews for documents, images and text
A small number of sites are still built and tested only against Chromium Mozilla’s revenue comes largely from a search deal, which shapes some defaults	Fits best on a KDE Plasma desktop Smaller extension ecosystem than Chromium or Firefox
Downloadable app	Downloadable app
Open source	Open source
License: MPL-2.0	License not stated
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked September 23, 2026

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