| Extension | File Description |
| .D86 | Uncommon Files |
| .D87 | Uncommon Files |
| .D88 | Uncommon Files |
| .D89 | Uncommon Files |
| .D8A | Uncommon Files |
| .D8B | Uncommon Files |
| .D8C | Uncommon Files |
| .D8D | Uncommon Files |
| .D8E | Uncommon Files |
| .D8F | Uncommon Files |
| .D8G | Uncommon Files |
| .D8H | Uncommon Files |
| .D8I | Uncommon Files |
| .D8J | Uncommon Files |
| .D8K | Uncommon Files |
| .D8L | Uncommon Files |
| .D8M | Uncommon Files |
| .D8N | Uncommon Files |
| .D8O | Uncommon Files |
| .D8P | Uncommon Files |
| .D8Q | Uncommon Files |
| .D8R | Uncommon Files |
| .D8S | Uncommon Files |
| .D8T | Uncommon Files |
| .D8U | Uncommon Files |
| .D8V | Uncommon Files |
| .D8W | Uncommon Files |
| .D8X | Uncommon Files |
| .D8Y | Uncommon Files |
| .D8Z | Uncommon Files |
| .D90 | Uncommon Files |
| .D91 | Uncommon Files |
| .D92 | Uncommon Files |
| .D93 | Uncommon Files |
| .D94 | Uncommon Files |
| .D95 | Uncommon Files |
| .D96 | Uncommon Files |
| .D97 | Uncommon Files |
| .D98 | Uncommon Files |
| .D99 | Uncommon Files |
| .D9A | Uncommon Files |
| .D9B | Uncommon Files |
| .D9C | Uncommon Files |
| .D9D | Uncommon Files |
| .D9E | Uncommon Files |
| .D9F | Uncommon Files |
| .D9G | Uncommon Files |
| .D9H | Uncommon Files |
| .D9I | Uncommon Files |
| .D9J | Uncommon Files |
| .D9K | Uncommon Files |
| .D9L | Uncommon Files |
| .D9M | Uncommon Files |
| .D9N | Uncommon Files |
| .D9O | Uncommon Files |
| .D9P | Uncommon Files |
| .D9Q | Uncommon Files |
| .D9R | Uncommon Files |
| .D9S | Uncommon Files |
| .D9T | Uncommon Files |
| .D9U | Uncommon Files |
| .D9V | Uncommon Files |
| .D9W | Uncommon Files |
| .D9X | Uncommon Files |
| .D9Y | Uncommon Files |
| .D9Z | Uncommon Files |
| .DA | Uncommon Files |
| .DA! | Uncommon Files |
| .DA$ | Uncommon Files |
| .DA0 | Backup Files |
| .DA1 | Uncommon Files |
| .DA2 | Misc Files |
| .DA3 | Uncommon Files |
| .DA4 | Uncommon Files |
| .DA5 | Uncommon Files |
| Extension | File Description |
| .DA6 | Uncommon Files |
| .DA7 | Uncommon Files |
| .DA8 | Uncommon Files |
| .DA9 | Uncommon Files |
| .DAA | Disk Image Files |
| .DAB | Uncommon Files |
| .DAC | Uncommon Files |
| .DAD | Database Files |
| .DAE | 3D Image Files |
| .DAEMONSCRI | Uncommon Files |
| .DAF | Data Files |
| .DAG | Uncommon Files |
| .DAH | Uncommon Files |
| .DAI | Uncommon Files |
| .DAILY | Uncommon Files |
| .DAJ | Uncommon Files |
| .DAK | Uncommon Files |
| .DAL | Misc Files |
| .DAM | Uncommon Files |
| .DAMS | Uncommon Files |
| .DAN | Uncommon Files |
| .DANCE | Uncommon Files |
| .DAO | Disk Image Files |
| .DAP | Misc Files |
| .DAPF | Uncommon Files |
| .DAPROJ | Uncommon Files |
| .DAQ | Uncommon Files |
| .DAR | Compressed Files |
| .DARBY | Uncommon Files |
| .DARK | Uncommon Files |
| .DART | Disk Image Files |
| .DARTS | Uncommon Files |
| .DAS | Data Files |
| .DAT | Data Files |
| .DATA | Data Files |
| .DATA1 | Uncommon Files |
| .DATA2 | Uncommon Files |
| .DATA3 | Uncommon Files |
| .DATA4 | Uncommon Files |
| .DATA5 | Uncommon Files |
| .DATACAT | Uncommon Files |
| .DATAGRABBE | Uncommon Files |
| .DATALESS | Data Files |
| .DATALINK | Uncommon Files |
| .DATALINK2 | Uncommon Files |
| .DATALINKHE | Uncommon Files |
| .DATAS1 | Uncommon Files |
| .DATAS2 | Uncommon Files |
| .DATE | Uncommon Files |
| .DATEBOOK | Uncommon Files |
| .DAU | Uncommon Files |
| .DAV | Uncommon Files |
| .DAVE | Uncommon Files |
| .DAVES | Uncommon Files |
| .DAVMOUNT | Web Files |
| .DAW | Uncommon Files |
| .DAWN | Uncommon Files |
| .DAX | Disk Image Files |
| .DAY | Game Files |
| .DAYS | Uncommon Files |
| .DAZ | 3D Image Files |
| .DB | Game Files |
| .DB$ | Uncommon Files |
| .DB0 | Uncommon Files |
| .DB1 | Uncommon Files |
| .DB2 | Database Files |
| .DB3 | Database Files |
| .DB4 | Uncommon Files |
| .DB5 | Uncommon Files |
| .DB6 | Uncommon Files |
| .DB7 | Uncommon Files |
| .DB8 | Uncommon Files |
| .DB9 | Uncommon Files |
| .DBA | Developer Files |
| .DBAS | Uncommon Files |
