K

File extensions starting with the letter K...

  .K25  Kurzweil 2500 Sample
        Kodak DC25 Digital Camera File
  .KAR  Karaoke MIDI File
  .KB   Borland C++ Keyboard Script
        Knowledge Pro Source Code
  .KBD  Keyboard Script File Layout (various)  
  .KBI  Keirsey-Bates Temperament Sorter Index
  .KBM  Reflection Keyboard Script File Layout
  .KBP  Keirsey-Bates Temperament Sorter Profile
  .KBR  Keirsey-Bates Temperament Sorter Data
  .KCL  Kyoto Common LISP Source Code
  .KDC  Kodak Photo-Enhancer  [Viewer]
  .KED  KEDIT Profile and Macro File (DOS-based version of IBM XEDIT)
  .KEX  KEDIT Profile File (? - not verified -?}
  .KEY  Keyboard Macros
        Forecast Pro Datafile
        Program Security or Registration File (various)
        DataCAD Icon Toolbar File
  .KFX  KoFax Group 4 Image
  .KIZ  Kodak Digital Postcard File
  .KKW  RoboHELP Keyword Help project Index File
  .KMP  Korg Trinity KeyMaP File
  .KNO  Personal Knowbase File
  .KOS  MicroType Pro Document
  .KPP  SmartPad Toolpad
  .KPS  IBM KIPS Bitmap
  .KQP  Konica Camera File
  .KR1  Kurzweil 2000 Sample (multi-floppy)
  .KRY  Herolab Krypten
  .KRZ  Kurzweil 2000 Sample
  .KSC  Korg Trinity Script
  .KSE  Keepsake Studio Export File
  .KSF  Korg Trinity Sample
  .KSH  Prodigy Internet Registration File
  .KTT  KeyText Data File
  .KUMAC  Physics Analysis Workstation Macro File
  .KYB  Keyboard Layout
  .KYE  Kye Game Data