Vivid3D C++, is a brand new 3D engine and IDE from Vivid Software.
It is 100% open source, and funded through public means. It has a custom UI called “Resonance2”. It supports scripting through Python, which is unique as most engines use C++ or C#. Click here to be taken to the GitHub page, where you can clone the engine. VIVID3D uploads updates frequently.
The engine uses AssImp 5.0 to allow it to import over 40+ 3D formats, including texture maps.