GIMP: The Free Photoshop Alternative That Supports Hundreds of Plug-ins
GIMP is an image editing program that comes close to Photoshop, and it is open source. Although it is free software, meaning you can use it at no cost, its features are by no means inferior to the commercial Photoshop. Basic drawing tools are built in, it supports layers, and most importantly, you can extend its functionality by installing plug-ins. As far as I know, there are hundreds of plug-ins available. ...