| Extension | File Description |
| .KCB | Uncommon Files |
| .KCC | Uncommon Files |
| .KCD | Uncommon Files |
| .KCE | Uncommon Files |
| .KCF | Uncommon Files |
| .KCG | Uncommon Files |
| .KCH | Uncommon Files |
| .KCI | Uncommon Files |
| .KCJ | Uncommon Files |
| .KCK | Uncommon Files |
| .KCL | Game Files |
| .KCM | Uncommon Files |
| .KCN | Uncommon Files |
| .KCO | Uncommon Files |
| .KCP | Uncommon Files |
| .KCQ | Uncommon Files |
| .KCR | Uncommon Files |
| .KCS | Uncommon Files |
| .KCT | Uncommon Files |
| .KCU | Uncommon Files |
| .KCV | Uncommon Files |
| .KCW | Uncommon Files |
| .KCX | Uncommon Files |
| .KCY | Uncommon Files |
| .KCZ | Uncommon Files |
| .KD0 | Uncommon Files |
| .KD1 | Uncommon Files |
| .KD2 | Uncommon Files |
| .KD3 | Uncommon Files |
| .KD4 | Uncommon Files |
| .KD5 | Uncommon Files |
| .KD6 | Uncommon Files |
| .KD7 | Uncommon Files |
| .KD8 | Uncommon Files |
| .KD9 | Uncommon Files |
| .KDA | Uncommon Files |
| .KDB | Database Files |
| .KDBX | Data Files |
| .KDC | Data Files |
| .KDD | Uncommon Files |
| .KDE | Uncommon Files |
| .KDELNK | Uncommon Files |
| .KDEVELOP | Developer Files |
| .KDEVPRJ | Developer Files |
| .KDEVSES | Uncommon Files |
| .KDF | Uncommon Files |
| .KDG | Uncommon Files |
| .KDH | Uncommon Files |
| .KDI | Uncommon Files |
| .KDJ | Uncommon Files |
| .KDK | Raster Image Files |
| .KDL | Uncommon Files |
| .KDM | Uncommon Files |
| .KDN | Uncommon Files |
| .KDO | Uncommon Files |
| .KDP | Uncommon Files |
| .KDQ | Uncommon Files |
| .KDR | Uncommon Files |
| .KDS | Uncommon Files |
| .KDT | Uncommon Files |
| .KDU | Uncommon Files |
| .KDV | Uncommon Files |
| .KDW | Uncommon Files |
| .KDX | Uncommon Files |
| .KDY | Uncommon Files |
| .KDZ | Uncommon Files |
| .KE$ | Uncommon Files |
| .KE0 | Uncommon Files |
| .KE1 | Uncommon Files |
| .KE2 | Uncommon Files |
| .KE3 | Uncommon Files |
| .KE4 | Uncommon Files |
| .KE5 | Uncommon Files |
| .KE6 | Uncommon Files |
| .KE7 | Uncommon Files |
| Extension | File Description |
| .KE8 | Uncommon Files |
| .KE9 | Uncommon Files |
| .KEA | Uncommon Files |
| .KEB | Uncommon Files |
| .KEC | Uncommon Files |
| .KED | Uncommon Files |
| .KEE | Uncommon Files |
| .KEF | Uncommon Files |
| .KEG | Uncommon Files |
| .KEH | Uncommon Files |
| .KEI | Uncommon Files |
| .KEJ | Uncommon Files |
| .KEK | Uncommon Files |
| .KEL | Uncommon Files |
| .KEM | Uncommon Files |
| .KEN | Uncommon Files |
| .KEO | Uncommon Files |
| .KEP | Uncommon Files |
| .KEQ | Uncommon Files |
| .KER | Uncommon Files |
| .KERNEL | Uncommon Files |
| .KES | Text Files |
| .KET | Uncommon Files |
| .KEU | Uncommon Files |
| .KEV | Uncommon Files |
| .KEW | Uncommon Files |
| .KEX | Uncommon Files |
| .KEXI | Uncommon Files |
| .KEXIS | Uncommon Files |
| .KEXT | System Files |
| .KEY | Misc Files |
| .KEY1 | Uncommon Files |
| .KEYBOARD | Uncommon Files |
| .KEYCHANGER | Uncommon Files |
| .KEYNOTE | Uncommon Files |
| .KEYS | Uncommon Files |
| .KEZ | Uncommon Files |
| .KE_ | Uncommon Files |
| .KF0 | Uncommon Files |
| .KF1 | Uncommon Files |
| .KF2 | Uncommon Files |
| .KF3 | Uncommon Files |
| .KF4 | Uncommon Files |
| .KF5 | Uncommon Files |
| .KF6 | Uncommon Files |
| .KF7 | Uncommon Files |
| .KF8 | Uncommon Files |
| .KF9 | Uncommon Files |
| .KFA | Uncommon Files |
| .KFB | Uncommon Files |
| .KFC | Uncommon Files |
| .KFD | Uncommon Files |
| .KFE | Uncommon Files |
| .KFF | Uncommon Files |
| .KFG | Uncommon Files |
| .KFH | Uncommon Files |
| .KFI | Uncommon Files |
| .KFJ | Uncommon Files |
| .KFK | Uncommon Files |
| .KFL | Uncommon Files |
| .KFM | 3D Image Files |
| .KFN | Audio Files |
| .KFO | Data Files |
| .KFP | Uncommon Files |
| .KFQ | Uncommon Files |
| .KFR | Uncommon Files |
| .KFS | Uncommon Files |
| .KFT | Uncommon Files |
| .KFU | Uncommon Files |
| .KFV | Uncommon Files |
| .KFW | Uncommon Files |
| .KFX | Raster Image Files |
| .KFY | Uncommon Files |
| .KFZ | Uncommon Files |
| .KG0 | Uncommon Files |
