Similar to GNU_LilyPond

R (programming language)

Sather

SmartEiffel

Speex

Tar (computing)

GNU arch

GNAT

GNU social

Texinfo

GNU Bison

GNU Bazaar

Bash (Unix shell)

Less (Unix)

AMule

APT (software)

Aptitude (software)

Aria (storage engine)

Armadillo (C++ library)

Asymptote (vector graphics language)

AutoDock

AutoHotkey

Boost (C++ libraries)

Calamares (software)

CatBoost

Ceph (software)

CrypTool

Fluxbox

Fontmatrix