Name: GIMP

Platform: Windows, Mac, Linux

Download Link: www.gimp.org

Description:
GIMP is a photo editor, digital image creator, and can be used to create animated GIFs. File type support includes, but is not limited to, BMP, JPEG, PNG, GIF, TIFF, PostScript, SVG, and ICO. GIMP is widely used as a free alternative to Photoshop and many of GIMP’s RGB files are compatible with Photoshop.