Similar to Blackbox
Irssi
IrssiIspell
Ispell
Iw (Linux)
Jabber
Jahshaka
Jaspersoft BI
Jcode.pl
JEdit
JEditJekyll
Jekyll (software)Jigdo
JigdoJitsi
JitsiJOnAS
Jq (プログラミング言語)
JRuby
JRuby
JSDoc
JSDocJuK
JuK
Jython
Jython
Kaffeine
KaffeineKAlarm
KAlarm
Kali Linux
Kali Linux
Kate
Kate (text editor)KaTeX
KaTeX
Kawa
Kawa (Scheme implementation)KBabel
KCharSelect
KColorEdit
KColorEditKControl
KDE
KDE
