Similar to Apache_James

Discourse (software)

Dlib

Docker (software)

Dolphin (file manager)

Dolphin (emulator)

Dragon Player

Drupal

DVD Flick

Device independent file format#DVI-to-PDF converters

Dvips

EGS (program)

Element (software)

Emacs

Enlightened Sound Daemon

Erlang (programming language)

Mule (software)

Etherpad

Euler Mathematical Toolbox

Exa (command-line utility)

Exaile

Expr