dear imgui (also know as ImGui) is a graphical user interface library for C++. It creates optimized vertex buffers that you can render anytime in your 3D-pipeline-enabled application. It's fast, portable, renderer-agnostic, and self-contained, without external dependencies.

ImGui is aimed at content creation, visualization, and debugging tools as opposed to average end-user interfaces. Hence it favors simplicity and productivity but lacks certain features often found in higher-level libraries. It is particularly suited to integration in game engine tooling, real-time 3D applications, full-screen applications, and embedded platforms without standard operating system features.