Level editor for Hexcells
Level editing suite for The Legend of Zelda: The Minish Cap
Kirby's Dream Course / Kirby Bowl level editor (C++ / Qt)
Level Editor for the PC version of Sonic Generations
THPS Scene import/export for Blender
N-Space: a mobile app for building 3D interactive worlds
(WIP) Fully playable, open source recreation of every Rhythm Heaven mini...
CAMM (Crystal Alien Map Maker) open source level/map editor for CrystAli...
Kirby's Adventure Level Editor (C++ / Qt)
Unity3d Editor tools to create rooms quickly.
2D editor written in Haxe Kha