6 best C# Desktop Application libraries in 2025

C# is a general-purpose programming language that can be used to create Windows applications, websites, web services, and other types of applications. C# is a programming language developed by Microsoft. C# is a language that is widely used in many projects. It’s an object-oriented programming language that was developed by Microsoft and released in 2000. C# is one of the most popular programming languages in the world, and it has been adopted by many companies. C# is a multi-paradigm programming language encompassing strong typing, imperative, declarative, functional, generic, object-oriented (class-based), and component-oriented programming disciplines. Developers tend to use some of the following C# Desktop Application open source libraries: wpf - NET Core UI framework for building Windows desktop applications; winforms - Windows Forms is a .NET Core UI framework; NanUI - open source .NET project for .NET / .NET Core developers.