| Extension | File Description |
| .A3L | Data Files |
| .A3M | Data Files |
| .A3W | Data Files |
| .A4L | Data Files |
| .A4M | Data Files |
| .A4W | Data Files |
| .A5L | Data Files |
| .A65 | Data Files |
| .AAM | Data Files |
| .AB1 | Data Files |
| .AB2 | Data Files |
| .AB3 | Data Files |
| .ABI | Data Files |
| .ABP | Data Files |
| .ABY | Data Files |
| .ACA | Data Files |
| .ACC | Data Files |
| .ACG | Data Files |
| .ACUTC | Data Files |
| .ADU | Data Files |
| .ADX | Data Files |
| .AFT | Data Files |
| .AHEAD | Data Files |
| .AIV | Data Files |
| .ALC | Data Files |
| .ALD | Data Files |
| .ALI | Data Files |
| .AMB | Data Files |
| .AMC | Data Files |
| .AN1 | Data Files |
| .ANS | Data Files |
| .ANX | Data Files |
| .APH | Data Files |
| .AS | Data Files |
| .ASHPRJ | Data Files |
| .ASM | Data Files |
| .ASND | Data Files |
| .ASR | Data Files |
| .ATS | Data Files |
| .AVC | Data Files |
| .AW | Data Files |
| .AZW | Data Files |
| .AZW1 | Data Files |
| .AZZ | Data Files |
| .BCC | Data Files |
| .BCI | Data Files |
| .BCM | Data Files |
| .BCPIO | Data Files |
| .BCT | Data Files |
| .BDIC | Data Files |
| .BFX | Data Files |
| .BGT | Data Files |
| .BIM | Data Files |
| .BIN | Data Files |
| .BJO | Data Files |
| .BK | Data Files |
| .BKM | Data Files |
| .BLB | Data Files |
| .BLD | Data Files |
| .BLG | Data Files |
| .BLN | Data Files |
| .BM2 | Data Files |
| .BMS | Data Files |
| .BOK | Data Files |
| .BOOK | Data Files |
| .BRAIN | Data Files |
| .BRD | Data Files |
| .BRW | Data Files |
| .BTF | Data Files |
| .BTIF | Data Files |
| .BTM | Data Files |
| .BUTTHEREIS | Data Files |
| .B~K | Data Files |
| .C3D | Data Files |
| .CAF | Data Files |
| Extension | File Description |
| .CCA | Data Files |
| .CCH | Data Files |
| .CCP | Data Files |
| .CCR | Data Files |
| .CCT | Data Files |
| .CDF | Data Files |
| .CDP | Data Files |
| .CDPX | Data Files |
| .CDPZ | Data Files |
| .CDY | Data Files |
| .CHG | Data Files |
| .CHN | Data Files |
| .CHRT | Data Files |
| .CII | Data Files |
| .CKT | Data Files |
| .CL4 | Data Files |
| .CLB | Data Files |
| .CLK | Data Files |
| .CLKP | Data Files |
| .CLM | Data Files |
| .CLP | Data Files |
| .CMAP | Data Files |
| .CMBL | Data Files |
| .CML | Data Files |
| .CNA | Data Files |
| .COL | Data Files |
| .COLLECTION | Data Files |
| .CONTACT | Data Files |
| .COR | Data Files |
| .CRY | Data Files |
| .CRYPTONOTE | Data Files |
| .CSA | Data Files |
| .CSL | Data Files |
| .CSV | Data Files |
| .CTM | Data Files |
| .CTT | Data Files |
| .CTV | Data Files |
| .CUB | Data Files |
| .CURXPTHEME | Data Files |
| .CVD | Data Files |
| .CVN | Data Files |
| .CWK | Data Files |
| .CWW | Data Files |
| .CWZ | Data Files |
| .CXT | Data Files |
| .CYO | Data Files |
| .CYS | Data Files |
| .DAF | Data Files |
| .DAS | Data Files |
| .DAT | Data Files |
| .DATA | Data Files |
| .DATALESS | Data Files |
| .DBD | Data Files |
| .DCMD | Data Files |
| .DDB | Data Files |
| .DDC | Data Files |
| .DDT | Data Files |
| .DFM | Data Files |
| .DGS | Data Files |
| .DHCD | Data Files |
| .DIA | Data Files |
| .DII | Data Files |
| .DISTZ | Data Files |
| .DM2 | Data Files |
| .DMC | Data Files |
| .DNA | Data Files |
| .DOCKZIP | Data Files |
| .DPN | Data Files |
| .DPT | Data Files |
| .DPX | Data Files |
| .DRF | Data Files |
| .DRL | Data Files |
| .DSD | Data Files |
| .DSX | Data Files |
| .DSY | Data Files |
