Delta Engine

Home: https://deltaengine.net/, https://github.com/DeltaEngine
State: mature, inactive since 2015
Keyword: framework
Code repository: https://github.com/DeltaEngine/DeltaEngine.git (@created 2012, @stars 128, @forks 32)
Code language: C#
Code license: Apache-2.0

Multi-platform Game Engine, C# OpenGL Version (custom wrapper) including the Editor.

Building