8 best C# Application libraries in 2025

The world of software development is evolving at a fast pace. It's no secret that the process of coding a desktop application from scratch can sometimes be extremely frustrating and time-consuming. Open-source libraries are a boon to programmers around the world. They save you time and effort, and prevent you from reinventing the wheel. C# application can be easily developed by using the open source libraries. The libraries are the set of functions that are used by the programmers to develop a web application. Some of the most widely used open source libraries for C# Application among developers include: ArchiSteamFarm - primary purpose of idling Steam cards | Video Game library; C-sharp-console-gui-framework - A GUI framework for C# console applications; GeneticSharp - multithreading C# Genetic Algorithm library; High-Speed-Priority-Queue-for-C-Sharp - A C# priority queue optimized for pathfinding applications.