Similar to OpenSSL

Brackets
Brackets (text editor)
Cacti
Cacti (software)
Calibre
Calibre (software)
Ccache
CcacheCdparanoia
Cdparanoia
Cdrkit
Cdrkit
CenterStage

Chrony
Chrony
Clam AntiVirus
ClamAV
Coccinella
Coccinella (software)
Completely Fair Scheduler
Completely Fair Scheduler
Concurrent Versions System
Concurrent Versions System
Conky
Conky (software)
Cooperative Linux
Cooperative Linux
Cowsay
Cowsay
CPython
CPython
Cream (テキストエディタ)

CRuby
Ruby MRI
CUPS
CUPS
Cygwin
Cygwin
Cygwin/X
Cygwin/X
Dbndns
Dbndns
Debian Almquist shell
Debian Almquist shell
DesktopBSD
DesktopBSD
DigiKam
DigiKam
DirectFB
DirectFB
Distcc
Distcc
DSLinux