Gimp is a free program that you can download. It is just as good as Photo Shop and just as complicated to learn to use well. If you are into photos and art, it is a worthwhile program though. It will work on Microsoft and on Linux platforms. The program comes already installed if you install Ubuntu Linux which is also a free program which is an operating system just as Windows is. You can install Ubuntu linux on a Windows system and have a dual boot system if you want. Just Google "Ubuntu" and/or "Gimp" if you are interested in more info.