mtPaint

mtPaint is a simple painting software developed from scratch so you can easily create pixel art and manipulate digital photos. It uses the GTK+ toolkit (version 1 or 2) and runs on PC's via the GNU/Linux or Windows operating systems. Because of its simplicity it can also run on older PC hardware (e.g. a 200MHz CPU and 32MB of RAM). By default it is in the English language, but there are also translations available for other languages such as Spanish, Czech, French, Portuguese and Brazilian Portuguese.

What is new in this release:

Version 3.40 includes usage of multiple CPU cores to speed up slower processing tasks, new tools - for image segmentation, and for approximating gradients using palette colors, and new keyboard shortcuts.