Similar to FreeBASIC

Glasgow Haskell Compiler

GNU Compiler for Java

Xojo

Amarok (software)

Apertium

Aptana

Audacious (software)

Avidemux

Calibre (software)

Chrony

Coccinelle (software)

Code::Blocks

CodeLite

Completely Fair Scheduler

Concurrent Versions System

Darik's Boot and Nuke

Dev-C++

Drupal

Element (software)

Exaile

Fastest Fourier Transform in the West

Foliate (software)

Geany

GNU Emacs

GNU Scientific Library

GNU Taler

ImpressPages

InfraRecorder