Dear ImGui: Bloat-free Immediate Mode Graphical User interface for C++ with minimal dependencies
OpenGL Mathematics (GLM) https://glm.g-truc.net
A multi-platform library for OpenGL, OpenGL ES, Vulkan, window and input https://www.glfw.org/
Image library
Base library used across multiple projects
Cross-platform, graphics API agnostic, "Bring Your Own Engine/Framework" style rendering library.