Paint.NET is free image editing and photo manipulation software designed to be used on computers that run Windows. It supports layers, unlimited undo, special effects, and a wide variety of useful and pwerful tools ... .. The programming language used to create Paint.NET is C#, with a small amount of C++ for installation and shell-integration related functionality.
Paint.NET - Free Photo Editing Software for Windows
Interested in looking at 105,000 lines of code? This can be useful for students, developers, or anyone interested in checking it out for educational or ...