| Extension | File Description |
| .KO | System Files |
| .KO0 | Uncommon Files |
| .KO1 | Uncommon Files |
| .KO2 | Uncommon Files |
| .KO3 | Uncommon Files |
| .KO4 | Uncommon Files |
| .KO5 | Uncommon Files |
| .KO6 | Uncommon Files |
| .KO7 | Uncommon Files |
| .KO8 | Uncommon Files |
| .KO9 | Uncommon Files |
| .KOA | Uncommon Files |
| .KOB | Uncommon Files |
| .KOC | Uncommon Files |
| .KOD | Uncommon Files |
| .KOE | Uncommon Files |
| .KOF | Uncommon Files |
| .KOG | Uncommon Files |
| .KOH | Uncommon Files |
| .KOI | Uncommon Files |
| .KOJ | Uncommon Files |
| .KOK | Uncommon Files |
| .KOL | Uncommon Files |
| .KOM | Uncommon Files |
| .KON | Text Files |
| .KOO | Uncommon Files |
| .KOP | Uncommon Files |
| .KOQ | Uncommon Files |
| .KOR | System Files |
| .KOS | Uncommon Files |
| .KOSIMA | Uncommon Files |
| .KOT | Uncommon Files |
| .KOU | Uncommon Files |
| .KOURSE | Uncommon Files |
| .KOV | Uncommon Files |
| .KOW | Uncommon Files |
| .KOX | Uncommon Files |
| .KOY | Uncommon Files |
| .KOZ | Audio Files |
| .KP0 | Uncommon Files |
| .KP1 | Uncommon Files |
| .KP2 | Uncommon Files |
| .KP3 | Uncommon Files |
| .KP4 | Uncommon Files |
| .KP5 | Uncommon Files |
| .KP6 | Uncommon Files |
| .KP7 | Uncommon Files |
| .KP8 | Uncommon Files |
| .KP9 | Uncommon Files |
| .KPA | Uncommon Files |
| .KPB | Uncommon Files |
| .KPC | Uncommon Files |
| .KPD | Uncommon Files |
| .KPE | Uncommon Files |
| .KPF | Data Files |
| .KPG | Raster Image Files |
| .KPH | Uncommon Files |
| .KPI | Uncommon Files |
| .KPJ | Uncommon Files |
| .KPK | Uncommon Files |
| .KPL | Developer Files |
| .KPM | Uncommon Files |
| .KPN | Uncommon Files |
| .KPO | Uncommon Files |
| .KPP | Data Files |
| .KPPX | Uncommon Files |
| .KPQ | Uncommon Files |
| .KPR | Data Files |
| .KPS | Uncommon Files |
| .KPT | Uncommon Files |
| .KPU | Uncommon Files |
| .KPV | Uncommon Files |
| .KPW | Uncommon Files |
| .KPX | Data Files |
| .KPXX | Data Files |
| Extension | File Description |
| .KPY | Uncommon Files |
| .KPZ | Uncommon Files |
| .KQ0 | Uncommon Files |
| .KQ1 | Uncommon Files |
| .KQ2 | Uncommon Files |
| .KQ3 | Uncommon Files |
| .KQ4 | Uncommon Files |
| .KQ5 | Uncommon Files |
| .KQ6 | Uncommon Files |
| .KQ7 | Uncommon Files |
| .KQ8 | Uncommon Files |
| .KQ9 | Uncommon Files |
| .KQA | Uncommon Files |
| .KQB | Uncommon Files |
| .KQC | Uncommon Files |
| .KQD | Uncommon Files |
| .KQE | Uncommon Files |
| .KQF | Uncommon Files |
| .KQG | Uncommon Files |
| .KQH | Uncommon Files |
| .KQI | Uncommon Files |
| .KQJ | Uncommon Files |
| .KQK | Uncommon Files |
| .KQL | Uncommon Files |
| .KQM | Uncommon Files |
| .KQN | Uncommon Files |
| .KQO | Uncommon Files |
| .KQP | Uncommon Files |
| .KQQ | Uncommon Files |
| .KQR | Uncommon Files |
| .KQS | Uncommon Files |
| .KQT | Uncommon Files |
| .KQU | Uncommon Files |
| .KQV | Uncommon Files |
| .KQW | Uncommon Files |
| .KQX | Uncommon Files |
| .KQY | Uncommon Files |
| .KQZ | Uncommon Files |
| .KR0 | Uncommon Files |
| .KR1 | Uncommon Files |
| .KR2 | Uncommon Files |
| .KR3 | Uncommon Files |
| .KR4 | Uncommon Files |
| .KR5 | Uncommon Files |
| .KR6 | Uncommon Files |
| .KR7 | Uncommon Files |
| .KR8 | Uncommon Files |
| .KR9 | Uncommon Files |
| .KRA | Uncommon Files |
| .KRACK | Uncommon Files |
| .KRACKS | Uncommon Files |
| .KRAK | Uncommon Files |
| .KRAW | Uncommon Files |
| .KRB | Uncommon Files |
| .KRC | Uncommon Files |
| .KRD | Uncommon Files |
| .KRE | Uncommon Files |
| .KRF | Uncommon Files |
| .KRG | Uncommon Files |
| .KRH | Uncommon Files |
| .KRI | Uncommon Files |
| .KRIS | Uncommon Files |
| .KRISTAL | Uncommon Files |
| .KRJ | Uncommon Files |
| .KRK | Uncommon Files |
| .KRL | Uncommon Files |
| .KRM | Uncommon Files |
| .KRN | Uncommon Files |
| .KRO | Uncommon Files |
| .KROMHE | Uncommon Files |
| .KRP | Uncommon Files |
| .KRQ | Uncommon Files |
| .KRR | Uncommon Files |
| .KRS | Uncommon Files |
| .KRT | Uncommon Files |
