My very first game engine that I originally wrote for a Game Engines class in school.
OpenGL 3+
SOIL - Simple OpenGL Image Library
There is also some doxygen documentation in the works as well. If you would like to check it out, there is a Doxyfile provided that can be used to generate the documentation.
GLFW Engine : October 2014 - January 2015
bobcat : January 2015 - present