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

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