Extension Description Author File / Link
kar Midi Karaoke File Format Download
key ASCII format of GDSII Deprecated resource Link
keyboard Programming the Keyboard Download
kif Knowledge Interchange Format draft proposition Michael R. Genesereth Download
kml XML-based geographic annotation and visualization format, an OGC standard Google / Open Geospatial Consortium Link
Google reference documentation for KML elements Google Link
kmz ZIP-compressed archive containing a KML file and its supporting resources Google / Open Geospatial Consortium Link
kontour Kontour format for koffice-1.1 Deprecated resource Link
kpresenter KOffice KPresenter document format Kalle Dalheimer Download
KPresenter document format for koffice-1.1 Deprecated resource Link
kra Native layered document format of Krita, a ZIP package with XML and layer data Krita Foundation Link
kris Kris tracker format (also called ChipTracker by NoiseConverter & Exotic) Asle / ReDoX Download
ksm Kefrens-Sound Machine format Asle / ReDoX Download
KSM Embroidery file format for PFAFF machines Download
kspread KSpread document format for koffice-1.1 Deprecated resource Link
KOffice KSpread document format Kalle Dalheimer Download
kword KWord document format (DTD) for koffice-1.1 Deprecated resource Link
KOffice KWord document format (DTD) Kalle Dalheimer Download