.DSW | Microsoft Corporation | Asetustiedostot | Microsoft Visual Studio Workspace | Microsoft Visual Studio | Microsoft Corporation |
.DSX | DAZ 3D | Asetustiedostot | DAZ Studio XML File | Microsoft Visual Basic | Microsoft Corporation |
.DT2 | Microsoft Corporation | Rasterikuvatiedostot | Windows Live Messenger Emoticon Image File | Microsoft Windows Live Messenger | Microsoft Corporation |
.DTC | Microsoft Corporation | Datatiedostot | Windows Application Log File | Microsoft Windows Millenium Edition | Microsoft Corporation |
.DTCP-IP | Microsoft Corporation | Videotiedostot | Microsoft Windows Movie Maker Video | Microsoft Windows Live Movie Maker | Microsoft Corporation |
.DTD | Syncro Soft | Sovelluskehittäjän tiedostot | Document Type Definition File | Microsoft Notepad | Microsoft Corporation |
.DTH | Microsoft Corporation | Datatiedostot | Microsoft Windows Application Log File | Microsoft Windows | Microsoft Corporation |
.DTI | Microsoft Corporation | Datatiedostot | Microsoft Windows Application Log File | Microsoft Windows | Microsoft Corporation |
.DTS | CyberLink | Äänitiedostot | DTS Encoded Audio File | Microsoft SQL Server | Microsoft Corporation |
.DUMP | Microsoft Corporation | Järjestelmätiedostot | Dump File | Microsoft Windows | Microsoft Corporation |
.DUN | Trendy Entertainment | Pelitiedostot | Dungeon Defenders Saved Game File | Microsoft Dial-Up Networking | Microsoft Corporation |
.DUP | Microsoft Corporation | Asetustiedostot | Microsoft Windows DUA Polling Reconfiguration Data | Microsoft Windows | Microsoft Corporation |
.DUT | Microsoft Corporation | Datatiedostot | Dutch Localization Language | Microsoft Notepad | Microsoft Corporation |
.DV | Roxio | Videotiedostot | Digital Video File | Microsoft Windows Live Movie Maker | Microsoft Corporation |
.DVD | Unknown Developer | Järjestelmätiedostot | DOS Device Driver | MS-DOS | Microsoft Corporation |
.DVF | Sony | Äänitiedostot | Sony Digital Voice File | Microsoft Windows Media Player | Microsoft Corporation |
.DVR | Microsoft Corporation | Videotiedostot | Microsoft Recorded TV Show | Microsoft Windows Media Player | Microsoft Corporation |
.DVR-MS | Microsoft Corporation | Videotiedostot | Microsoft Digital Video Recording | Microsoft Windows Media Player | Microsoft Corporation |
.DWF | Autodesk, Inc. | 3D-kuvatiedostot | Autodesk Design Web Format File | ACD Systems Canvas | Microsoft Corporation |
.DWFX | Autodesk, Inc. | CAD-tiedostot | Design Web Format XPS File | Microsoft XPS Viewer | Microsoft Corporation |
.DWG | Autodesk, Inc. | CAD-tiedostot | AutoCAD Drawing Database File | ACD Systems Canvas | Microsoft Corporation |
.DX | Digital Equipment Corporation | Tekstitiedostot | DEC WPS Plus File | Microsoft Notepad | Microsoft Corporation |
.DXF | Autodesk, Inc. | CAD-tiedostot | Drawing Exchange Format | ACD Systems Canvas | Microsoft Corporation |
.DXL | IBM | Tietokantatiedostot | Domino XML Language File | Microsoft Notepad | Microsoft Corporation |
.DZC | Microsoft Corporation | Datatiedostot | Photosynth Deep Zoom Collection | Microsoft PhotoSynth | Microsoft Corporation |
.DZI | Microsoft Corporation | Rasterikuvatiedostot | PhotoSynth Deep Zoom Image File | Microsoft PhotoSynth | Microsoft Corporation |