Source code and official binaries for stable releases can be downloaded at download.kde.org.
Windows
Windows 7 is minimum supported Windows version.
You can choose between Standard (system-wide) installation and Portable installation which only extracts files and setup the application to run in portable mode by default.
Falkon-3.1.0.exe - for 32-bit Windows
Falkon-3.1.0-x64.exe - for 64-bit Windows
Linux
You should install falkon
package from your distribution’s repositories.
Flatpak
Nightly builds are available in kdeapps
flatpak repository.
Snap
Falkon releases can be installed using Snap on any Linux distro