Similar to Nomacs

Firebird (database server)

Firewalld

Flask (web framework)

Flatpak

FLTK

Foliate (software)

Fontconfig

FontForge

Foresight Linux

Fossil (software)

Free Pascal

FreeBASIC

FreeMat

FreeSBIE

Fsck

FuelPHP

FVWM

Galaxy (computational biology)

GConf

GD Graphics Library

Gettext

Gfarm file system