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Binary File Descriptor library

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BootX (Apple)

Botan (programming library)

Brackets (text editor)

Brotli

BSD libc

Budgie (desktop environment)

C-Store

Cacti (software)

Caddy (web server)

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Calibre (software)

Capistrano (software)

Ccache

Cdb (software)

Cdparanoia

Cdrkit

CERN httpd