Similar to GNOME_Boxes

FIGlet

File System Visualizer

Filesystem in Userspace

Flatpak

Fontconfig

FontForge

Fossil (software)

FreeBSD jail

FreeDOS

FreeIPA

FreeMat

Fuchsia (operating system)

GD Graphics Library

Geany

Gforth

GIMP

GNU Core Utilities

GNU Emacs

GNU GRUB

GNU Hello

GNU Multiple Precision Arithmetic Library

GNU Readline

GNU Scientific Library

Glibc

GNUnet

Gnuplot

GPAC Project on Advanced Content

Graphviz