| Double-take Software | 1 | 7 |
| Double Precision Incorporated | 4 | 19 |
| Doubleflex | 1 | 1 |
| Douchat | 1 | 1 |
| Douco | 1 | 18 |
| Doufox | 1 | 1 |
| Doug Luxem | 1 | 5 |
| Doug Neal | 1 | 1 |
| Doug Poulin | 1 | 0 |
| Douglas Wilson | 1 | 1 |
| Dounokouno | 1 | 0 |
| Douphp | 1 | 18 |
| Douran | 3 | 77 |
| Douran Software Technologies | 1 | 1 |
| Dov Grobgeld | 1 | 1 |
| Dovecot | 2 | 23 |
| Dover Fueling Solutions | 1 | 3 |
| Dovestones | 1 | 1 |
| Dovgalyuk | 1 | 2 |
| Downline Goldmine | 2 | 2 |
| Download Zip Attachments Project | 1 | 1 |
| Downloadmanager | 1 | 4 |
| Downstairs.dnsalias | 1 | 6 |
| Downton Abbey Fan Portal Project | 1 | 0 |
| Doxygen | 1 | 1 |
| Doyocms Project | 1 | 6 |
| Dozer Project | 1 | 1 |
| Dp3t-backend-software Development Kit Project | 1 | 1 |
| Dpdk | 2 | 4 |
| Dpic Project | 1 | 6 |
| Dpivision | 1 | 1 |
| Dproxy | 1 | 2 |
| Dproxy-nexgen Project | 1 | 4 |
| Dptech | 1 | 1 |
| Dr.web | 1 | 5 |
| DrAzraelTod | 1 | 1 |
| DrPaulBrewer | 1 | 1 |
| Drachtio | 1 | 6 |
| Dracut Project | 1 | 2 |
| Dradisframework | 1 | 2 |
| Draeger | 1 | 2 |
| Drag And Drop Multiple File Uploader Pro - Contact Form 7 Project | 1 | 1 |
| Dragdropcart | 1 | 1 |
| Dragino | 1 | 2 |
| Dragon Path | 1 | 1 |
| Dragon Internet | 1 | 1 |
| Dragonbyte-tech | 6 | 6 |
| Dragonfly | 1 | 4 |
| Dragonfly Project | 1 | 4 |
| Dragonflybsd | 1 | 3 |
| Dragonfrugal | 1 | 4 |
| Dragonwavex | 1 | 1 |
| Dragoon | 1 | 2 |
| Dragoran | 1 | 1 |
| Drake Team | 1 | 8 |
| Drar-eym | 1 | 0 |
| Draw | 1 | 1 |
| DrayTek | 2 | 4 |
| Draytek | 182 | 270 |
| Drbenhur | 1 | 17 |
| Drbenhur.com | 1 | 17 |
| Drdteam | 1 | 1 |
| Dream | 1 | 1 |
| Dream Security | 1 | 1 |
| Dream Security Co.,Ltd | 1 | 1 |
| Dream Technology | 1 | 1 |
| Dream-Theme | 1 | 2 |
| Dream-multimedia-tv | 6 | 7 |
| Dream4 | 3 | 13 |
| Dreambox | 2 | 2 |
| Dreamcodes | 2 | 2 |
| Dreamcost | 2 | 5 |
| Dreameesoft | 1 | 1 |
| Dreamer | 1 | 39 |
| Dreamer Cms Project | 1 | 30 |
| Dreamforge | 1 | 1 |
| Dreamfox | 1 | 1 |
| Dreamlevels | 4 | 5 |
| Dreamlog | 1 | 1 |
| Dreampics | 1 | 1 |
| Dreamreport | 2 | 6 |
| Dreaxteam | 1 | 2 |
| Drecom | 1 | 0 |
| Drei | 1 | 0 |
| Dremio | 1 | 1 |
| Drennansoft | 1 | 1 |
| Dressup | 1 | 0 |
| Drew Phillips | 2 | 2 |
| Drew Withers | 1 | 2 |
| Drewish | 1 | 2 |
| Drifty | 1 | 0 |
| Drinkedin | 1 | 0 |
| Driveagent | 1 | 1 |
| Driveragent | 1 | 1 |
| Drivergenius | 2 | 4 |
| Driverse | 1 | 1 |
| Drk-odenwaldkreis | 1 | 2 |
| Dro.pm Project | 1 | 1 |
| Drobo | 1 | 0 |
| Drogon | 1 | 4 |
