Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
CEGUI
We haven't tracked posts mentioning CEGUI yet.
Tracking mentions began in Dec 2020.
libRocket
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GUI for software, not games, but lighter than Qt ?
it's a fork of https://github.com/libRocket/libRocket which was started a long time ago.
- [Discussion] What are some old C++ open source projects you wish were still active?
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Best engine/tools to make games that are purely UI?
I've found libRocket to be a great UI library paired with SDL2 and OpenGL. It allows you to use a subset of html and css to design your UI, while handing rendering off to the renderer of your choice. This gives you the flexibility to add advanced visual effects during the rendering step.
What are some alternatives?
imgui - Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies
sciter - Sciter: the Embeddable HTML/CSS/JS engine for modern UI development
wxWidgets - Cross-Platform C++ GUI Library
RmlUi - RmlUi - The HTML/CSS User Interface library evolved
FLTK - FLTK - Fast Light Tool Kit - https://github.com/fltk/fltk - cross platform GUI development
MyGUI - Fast, flexible and simple GUI.
QCustomPlot
GTK+ - Read-only mirror of https://gitlab.gnome.org/GNOME/gtk
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.
NanoGUI - Minimalistic GUI library for OpenGL