Alternatives to Falkon
Lightweight KDE browser built on QtWebEngine. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Falkon
Lightweight KDE browser built on QtWebEngine.
Replacements
Listings that take over the same core job as Falkon.
Firefox
The main browser not built on Chromium, with tracking protection turned on by default.
Firefox replaces QtWebEngine with Mozilla's engine, offers strong extension support including full-API content blockers, and adds macOS, Android and iOS builds.
qutebrowser
A keyboard-driven browser with vim-style bindings and almost no interface to click on.
qutebrowser also uses QtWebEngine but is keyboard-driven with vim-style bindings and Python configuration, adds macOS, and has no Chrome or Firefox extension support.
Otter Browser
Use a configurable browser inspired by classic Opera.
Otter Browser is another Qt application for Windows and Linux that recreates classic Opera controls, though some of its planned features remain unfinished.
GNOME Web
GNOME's browser, built on WebKitGTK, formerly known as Epiphany.
GNOME Web swaps QtWebEngine for WebKitGTK and integrates with the GNOME desktop instead of Plasma, runs on Linux only, and lags on extensions and some web apps.
Midori
Lightweight browser with an ad blocker and privacy-focused defaults.
Midori is another lightweight open-source browser with ad blocking and tracking protection enabled, built on Chromium and adding an Android version.
Min
Browse with a minimal interface and grouped tabs.
Min is a lightweight open-source browser with tracker blocking, reader views and grouped tabs, adds macOS, and uses userscripts instead of an extension store.
Konqueror
KDE's combined web browser and file manager, using Qt WebEngine for pages.
Konqueror is also KDE software on Qt WebEngine and adds file management, FTP/SFTP and document previews, but it is Linux-only with a small extension ecosystem.
Chromium
The open-source browser project that Chrome, Edge, Brave, Opera and Vivaldi are all built from.
Chromium is the open-source upstream engine with Chrome's interface and adds macOS, but official builds do not auto-update and most builds lack Widevine DRM for paid streaming.
Also worth comparing
These listings name Falkon as their own alternative, so the relationship runs both ways.
Angelfish
A lightweight KDE web browser designed for mobile Linux devices that also runs on the desktop.
Falkon is a KDE browser on QtWebEngine with an ad blocker and password manager enabled out of the box, aimed at desktops and also available on Windows.
Dillo
Browse lightweight pages with a small graphical browser.
Falkon uses the fuller QtWebEngine engine with a built-in ad blocker and password manager, and runs on Windows and Linux but not macOS.
Dooble
An open-source Qt web browser focused on privacy and usability, with frequent releases.
Falkon is another open-source Qt browser, built on QtWebEngine with an ad blocker and password manager enabled, but it has no macOS build and releases are infrequent.
Similar software
Related functionality, not a direct replacement.
Nyxt
Keyboard-first browser configured and extended in Common Lisp.
Luakit
A keyboard-driven web browser built on WebKitGTK and GTK, configured and extended with Lua.
Vieb
A Vim-inspired Electron desktop browser built for keyboard navigation, with local ad blocking and strict permissions.
SeaMonkey
Classic internet suite combining a browser, email, feed reader, IRC client and HTML editor.
NetSurf
A small, fast open-source web browser written in C with its own layout engine.