SCons
The Battle for Wesnoth
バトルフィールド1942
Csound
Doom 3
FCEUX
gem5
gpsd
GtkRadiant
Madagascar
Mixxx
MongoDB
Nullsoft Scriptable Install System
NumPy and SciPy
OpenNebula
OSRM
SuperCollider
VMware
Formerly V8 (JavaScript engine)
Wolfenstein: Enemy Territory
XORP, MCA2
Godot