This free, open source software is multi-platform. It works on Mac OS X (10.4 through 10.9), Windows (Windows95 through Windows 8), Linux and other systems. It will run on older computers.Parts of Tux Paint have been currently translated into 129 languages. Tux Paint provides a number of optional accessibility enhancements to help make the program more suitable for some users. There are also Parental and Teacher controls that can be set up toprevent children from accidentalyy accessing other programs or files on the desktop. The interface is easy to use. Young children will figure it out quickly. There are several options within the drawing tools, including paintbrush, lines, shapes, text, labels, eraser, undo, and more. Images can be saved and printed.