GitHub page
Old SourceForge page

Download latest stable release: MyGUI 3.2.0 sources [~15 Mb]
Download binary demos and tools: MyGUI 3.2.0 win32 demos [~12 Mb]

We also recommend to update MyGUI from repository:
https://github.com/MyGUI/mygui.git
You need git client or use GitHub application for cloning repository.