Similar to LibreSSL

Cramfs
Cramfs
CrDroid
CrDroid
Cream (テキストエディタ)

CrossOver (ソフトウェア)
CrossOver (software)
CrunchBang Linux
CrunchBang Linux
Crystal Space
Crystal Space
Csound
Csound
CTWM
CTWM
CubePDF

CUBRID
CUBRID
CuPy
CuPy
CyanogenMod
CyanogenMod
Cygwin/X
Cygwin/X
Cyrus IMAP server
Cyrus IMAP server
Daredevil SKK

Darik's Boot and Nuke
Darik's Boot and Nuke
Dbndns
Dbndns
DC++
DC++
DD-WRT
DD-WRT
Debian
Debian▲1 trends
Debian Almquist shell
Debian Almquist shell
Debian GNU/Hurd

Deno
Deno (software)
DesktopBSD
DesktopBSD
DeSmuME

Dev-C++
Dev-C++
Diff
Diff
Diff3
Diff3