Similar to Windows_Package_Manager

Etherpad

Euler Mathematical Toolbox

GNOME Evolution

Exa (command-line utility)

Exaile

Expr

EZ Publish

F-Spot

Fast Library for Number Theory

Fetchmail

FFmpeg

Fastest Fourier Transform in the West

FIGlet

File System Visualizer

Filesystem in Userspace

FindBugs

Firebird (database server)

Firestarter (firewall)

Firewalld

Flask (web framework)

Flutter (software)

FMSX

Foliate (software)