imgui

Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies ..

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libui

Simple and portable (but not inflexible) GUI library in C that uses the native GUI technologies of each platform it supports. ..

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Nuklear

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

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implot

Immediate Mode Plotting ..

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yue

A library for creating native cross-platform GUI apps ..

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elements

Elements C++ GUI library ..

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RmlUi

RmlUi - The HTML/CSS User Interface library evolved ..

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GacUI

GPU Accelerated C++ User Interface, with WYSIWYG developing tools, XML supports, built-in data binding and MVVM features. ..

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boden

Purely native C++ cross-platform GUI framework for Android and iOS development. https://www.boden.io ..

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nanogui

Minimalistic C++/Python GUI library for OpenGL, GLES2/3, Metal, and WebAssembly/WebGL ..

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xtd

Free open-source modern C++17 / C++20 framework to create console, GUI (forms like WinForms) and unit test applications and libraries on Microsoft Windows, Apple macOS and Linux. ..

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cegui.org.uk

Visit http://cegui.org.uk for more details. ..

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