Adobe Systems Inc. is a leading developer of desktop publishing software. Their top products, Photoshop, Illustrator, and PageMaker, account for around 50% of their product sales. Adobe also distributes the free Acrobat Reader software. In 1999, Adobe released new versions of Photoshop and other products and reported record quarterly profits. Photoshop is Adobe's flagship photo editing software used widely by photographers, designers, and others for image manipulation. The open source GIMP software provides alternative free image editing capabilities for Linux and other platforms, though it has fewer features than Photoshop. Both Photoshop and GIMP are used by photographers, web designers, graphic designers, and others