"We've highlighted Paint.NET in the past, but it just released its first significant update in years, so we'd recommend grabbing the latest. Paint.NET handles most of the basics you'd expect from advanced image editors, and the update has added new effects (including new blurs and distortions), better performance (though Paint.NET has always been really light and fast), and a complete refresh of the user interface (enhanced for Aero/glass). Check out the release post for a more detailed changelog."
- Morton Fox
from Bookmarklet
I have used Paint.NET for years on my Windows box, it is really a great application! My favorite graphic editor is Pixelmator for OSX (A great PS alternative and only $60) but it is very hard to beat Paint.NET if you are a Windows user.
- Nicholas Kreidberg