Paint.NET is a free image and photo manipulation program designed to be used on computers that run Windows 2000, Windows XP, or higher. It supports layers, unlimited undo, special effects, and a wide variety of useful and powerful tools.
Originally started at Washington State University as a senior design project, and intended as a free replacement for the MS Paint software that comes with Windows, it has grown into a powerful yet simple tool for photo and image editing.
At Ynui Technology, we love Paint.NET and can see that it has great potential, it currently sits somewhere in between Photoshop and MS Paint, yet is easy and intuitive to use (and it's FREE!). The program can be downloaded from the Paint.NET website. You will need the Microsoft .NET Framework installed first, if you haven't already got it installed.