Similar to GNUstep

Blackbox

Blink (browser engine)

Bluefish (software)

BlueGriffon

Bochs

Boo (programming language)

Botan (programming library)

Brackets (text editor)

Brasero (software)

Brotli

BSD libc

Comparison of BSD operating systems

Bullet (software)

Byobu (software)

C-Store

Cacti (software)

Caddy (web server)

CakePHP

Calibre (software)

Capistrano (software)

Ccache

Cdb (software)

Cdparanoia

Cdrkit