Alphabetically: K
Extension File Description File Type
.k25
Kurzweil K2500 File
Audio
.k26
Kurzweil K2600 File
Audio
.kap
BSB Chart Image File
Data
.kar
Karaoke MIDI File
Audio
.kb
C++ Keyboard Script
Developer
.kb2
Kleo Backup File
Backup
.kbd
Keyboard Layout Script
System
.kdb
Keypass Database File
Database
.kdc
Kaspersky Virus Database File
Data
.kdevdlg
KDevelop Dialog Box File
Developer
.kdevelop
KDevelop Project Data File
Developer
.kdevprj
KDevelop Project File
Developer
.kdk
Kodak Proprietary Decimated TIFF File
Raster Image
.kdmp
Windows Crash Dump File
Developer
.kext
Mac OS X Kernel Extension
System
.key
Keynote Presentation
Data
.keychain
Mac OS X Keychain File
Settings
.kfx
Kofax Image File
Raster Image
.kgb
KGB Archive File
Compressed
.khd
Dynamics AX Kernel Help Data File
Misc
.khi
Dynamics AX Kernel Help Index File
Misc
.kic
Kodak Compressed Image File
Raster Image
.kid
Kidspiration Document
Data
.kin
Kinetic Music Project
Audio
.kismac
KisMAC Webservice File
Data
.kit
20-20 Design File
CAD
.kix
KiXtart Script File
Executable
.klg
Log File
Text
.kmc
Kinemac Animation File
3D Image
.kmcobj
Kinemac Sprite Object
3D Image
.kml
Keyhole Markup Language File
GIS
.kmm
K-Meleon Macro Module
Plugin
.kmp
Korg Trinity/Triton Keymap File
Audio
.kmz
Google Earth Placemark File
GIS
.knt
KeyNote Note File
Text
.ko
Linux Kernel Module File
System
.kodak
Kodak Photo CD File
Raster Image
.kon
Yahoo! Widget XML File
Text
.koob
Koob E-Book File
Data
.koz
Audiokoz Music File
Audio
.kpf
Komodo Project File
Data
.kpg
Kai's Power Goo Graphic
Raster Image
.kpl
Kazaa Playlist File
Audio
.kpp
Kid Pix Presentation
Data
.kpr
KPresenter Presentation
Data
.kpx
Kid Pix Picture
Data
.kpz
Komodo Template File
Data
.krz
Kurzweil K2000 File
Audio
.ksc
Korg Trinity/Triton Script File
Audio
.ksf
Korg Trinity/Triton Sample File
Audio
.ksh
Unix Korn Shell Script
Executable
.kt2
Battery 2 Drum Kit File
Audio
.kt3
Battery 3 Drum Kit File
Audio
.kth
Keynote Theme
Misc
.ktp
Kinetic Project Template
Audio
.kvtml
KWordQuiz File
Data
.kwd
KWord Document
Text
.kwreplay
Command & Conquer 3 Replay File
Game
.kyb
Keyboard Layout
Settings
.kyr
Lotus Domino Key Ring File
Misc
.kys
Adobe Photoshop Keyboard Shortcuts File
Settings