Similar to VP3

Darktable

Das U-Boot

Dasher (software)

Dbndns

DC++

DD-WRT

Denemo

Deno (software)

DesktopBSD

Dev-C++

Dia (software)

Diff

Diff3

DigiKam

Discourse (software)

Django (web framework)

Dlib

Docker (software)

Dolphin (file manager)

Dolphin (emulator)

Dragon Player

Drupal

DVD Flick