There are countless picture editors in the market, but when it comes to some serious graphics authoring needs, you either end up spending hundreds of dollars on programs like Adobe Photoshop in Windows environment (and its plug-ins too) or fail to find something better on Linux. But, the GIMP is yet another handy Linux freeware that can be used as a simple picture editor, or to perform advanced tasks such as creating icons, authoring graphics, cropping, and adding effects to pictures.
Another good thing about GIMP is that it is being constantly updated and, no wonder, because its popularity has been increasing with every release. There are countless plug-ins, filters, and brushes available for the program, to enhance its functionalities further.