Paint.net
Paint.NET is a free image and photo editing program for Windows PCs. It has a user interface that is both straightforward and unique, with layers, limitless undo, special effects, and a number of helpful and powerful tools. Friendly support, tutorials, and plugins are available from a vibrant and expanding online community.
It began as a free substitute for the Microsoft Paint software that comes with Windows and has evolved into a powerful yet user-friendly image and photo editor. It has been compared to Adobe® Photoshop®, Corel® Paint Shop Pro®, Microsoft Photo Editor, and The GIMP, among other digital photo editing software products.