Similar to GNU_Chess
JustView
K-Lite Codec Pack
K-Lite Codec PackK-Multimedia Player
KMPlayerK2Editor
Kairos Main Memory RDBMS
Kawa
Kawa (Scheme implementation)KbdApple
KbMedia Player
KDE システム設定
KETpic
Kexec
KexecKeychain
Keychain (software)Kiwix
KiwixKodai MailGo
Kojo
Kojo (learning environment)KonaWiki
Kontakt
Kumofs
L4マイクロカーネルファミリー
L4 microkernel familyLair (匿名掲示板)
LandView
LandViewLempel-Ziv-Oberhumer
Lempel–Ziv–OberhumerLESS
Less (style sheet language)Let'sケータイ!
LFM
Libjpeg
LibjpegLibpng
LibpngLibqrencode