Similar to FLTK
Kontact
Kontact
Konversation
KonversationKooka
Kopete
Kopete
KOrganizer
KPart
KDE Platform#KPartsKPDF
KPDFKPPP
KpppKRuler
KSirc
KSnapshot
KSnapshotKSysguard
KDE System GuardKTeaTime
Kubernetes
KubernetesKuickShow
Kumofs
Kutt
KView
KWallet
KWalletKWord
KWordKWQ
KWrite
KWrite
LADSPA
LADSPA
ウィジェット・ツールキット
Widget toolkitTemplate:Widget toolkits
Template:Widget toolkitsAbstract Window Toolkit
Abstract Window ToolkitInterface Builder
Interface BuilderJFace
JFace