Similar to Toonz

Device independent file format#DVI-to-PDF converters

Dvips

Eclipse (software)

EGS (program)

Emacs

Embedded GLIBC

Enlightened Sound Daemon

Erlang (programming language)

Mule (software)

Etherpad

Euler Mathematical Toolbox

GNOME Evolution

Exa (command-line utility)

Exaile

EZ Publish

F-Spot

Far Manager

Fast Library for Number Theory

Fetchmail

Ffdshow

FFmpeg

Fastest Fourier Transform in the West

FIGlet

File System Visualizer