Similar to Gnumeric

Diff3

Discourse (software)

Dlib

Docker (software)

Dolphin (file manager)

Dolphin (emulator)

Dragon Player

Drupal

DSpace

DVD Flick

Device independent file format#DVI-to-PDF converters

Dvips

Eclipse (software)

Elasticsearch

EGS (program)

Element (software)

Erlang (programming language)

ERP5

Mule (software)