Glade is a GUI designer for GTK, mainly for GNOME (Linux)-based systems. It doesn’t produce code, and instead is fully programming language-independent.
In general, community developers don’t recommend using Glade.
Resources
Glade and GTK suffers from some terrible documentation and use-practices, even for simple widgets. Easy to use resources include:
- How to Build GTK/Glade Graphical User Interfaces by Prof Kevin O’Kane at the University of Northern Iowa — highly recommended! It makes learning how to use many widgets extraordinarily easy.