Similar to Ring_(プログラミング言語)

Apache ZooKeeper

Apertium

Aptana

Ark (software)

Arora (web browser)

Aufs

AutoKey

AV1

Avidemux

AviSynth

Axiom (computer algebra system)

Bc (programming language)

Berry Linux

Binary File Descriptor library

BIRT Project

Blackbox

Bochs

Botan (programming library)

Brackets (text editor)

Brotli