 
                  GTK+
Open SourceGTK (formerly GTK+), or the GIMP Toolkit, is a free and open-source cross-platform widget toolkit for creating graphical user interfaces (GUIs). It's written in C and offers bindings for numerous other programming languages, making it highly versatile for building desktop applications.
                  
                    
                  
                  Key Features
                
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                      Excellent cross-platform support for Linux, Windows, and macOS.
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                      Mature and stable toolkit with a long history of development.
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                      Comprehensive set of widgets for building diverse interfaces.
 
         
                   
                   
                             
                            