Similar to QEMU

GNU Scientific Library

GNU Taler

Wget

Glibc

Gnulib

GNUmed

Gnuplot

GNUstep

GnuTLS

GNU Assembler

GNU Debugger

GNU Compiler Collection

Go (programming language)

ChromeOS

Google Guava

Google Native Client

Google Wave

GRASS GIS

Greasemonkey

Gretl

GROMACS

GT.M

GThumb

GTK