Similar to CURL

Darik's Boot and Nuke

Das U-Boot

Dasher (software)

Dbndns

DC++

Debian Almquist shell

Deno (software)

DesktopBSD

Dev-C++

Diff

Diff3

DigiKam

DirectFB

Discourse (software)

Distcc

Dlib

Docker (software)

Dolphin (file manager)

Dolphin (emulator)

Dragon Player

Drupal

DSpace