It's not PhotoShop but then again, it doesn't cost several hundred dollars. It's free software and it's a great image editor. GIMP stands for GNU Image Manipulation Program. GNU means it's free software in terms of price and the code is free to be improved by volunteers. That's exactly what's been happening for the last 10 years. The GIMP does just about everything a photo student needs to do and it runs on Linux, Macintosh and Windows computers. You can download your free copy from GIMP.org.