GZ Controls is a simple .dll file. So you just have to import it into Visual Studio, or any other IDE you use.
To import the library in Visual Studio you can follow this simple guide:
NOTE:
GZControls.dll uses ComponentFactory.Krypton.Toolkit.dll, but, unless you want to use this library in your project, you don't have to import it. Just copy it in the folder of your project, at the same level of GZControls.dll.
Home: CircularFadeProgressBar
Home: CoolList
Home: FadeButton
Home: GrowButton
Home: HorizontalFadeProgressBar
Home: ModernTabPanel
Home: PieceOfGlass
Home: TransparentLabel