Similar to Ruby

AutoKey

Avidemux

AviSynth

Bc (programming language)

Berry Linux

Binary File Descriptor library

BIRT Project

Blackbox

Bochs

BootX (Apple)

Botan (programming library)

Brackets (text editor)

Brotli

BSD libc

Budgie (desktop environment)

C-Store

Cacti (software)

Caddy (web server)

CakePHP