GitHub - Immediate-Mode-UI/Nuklear: A single-header ANSI C immediate mode cross-platform GUI library

This is a minimal-state, immediate-mode graphical user interface toolkit written in ANSI C and licensed under public domain. It was designed as a simple embeddable user interface for application and does not have any dependencies, a default render backend or OS window/input handling but instead provides a highly modular, library-based approach, with simple input state for input and draw commands d

[tybalt]

IMGUI。src/Readme.md を見る限りでは macOS、Linux、Windows で使えるみたい

[shuzo_kino]

UnityのUIでも使われてるIMGUI風のANSI-C実装。ライブラリ依存がなく、ヘッダファイルは一個で軽い。

[takehirohattori]

GUI

[barlog]

“A single-header ANSI C immediate mode cross-platform GUI library”