#4641
CopperCube (successor of irrEdit) is a free 3D authoring editor, also the most user-friendly 3D game engine. It is developed based on the free and open-source 3D game engine - Irrlicht Engine (SWFZ Engine was rewritten from this engine too), and its essence is a simple, lightweight but powerful interactive 3D scenes designing software with concise and clear user interface, convenient operation, and humanized design. It is mainly used in the production of 3D application, 3D game, 3D website, and 3D animation.

#4634
Torque 3D (full name: Torque Game Engine, TGE for short) is free, open-source and cross-platform 3D game engine developed by GarageGames (originally developed by Dynamix for the first-person shooter game Tribes 2 released in 2001) under the MIT license. It features powerful and complex rendering system, high-speed network transmission, authentic real-time editing, script editing system, as well as maximum flexibility and performance across a wide-range of hardware, and a full suite of tools for producing high-quality Windows and browser-based games development.