raygui
A simple and easy-to-use immediate-mode gui library
raygui is a lightweight, easy-to-use immediate-mode graphical user interface (GUI) library designed primarily to work alongside the raylib graphics programming library, though it can be adapted for other engines. It provides an API inspired by immediate-mode GUI paradigms, similar to Unity’s IMGUI, which allows developers to create buttons, sliders, text boxes, panels, and other controls without managing retained widget states.