The GIMP is the most widely supported image manipulation available today. The platforms that The GIMP is known to work on include GNU/Linux™, Apple Mac OS X (Darwin)™, Microsoft Windows 95, 98, Me, XP, NT4, and 2000™, OpenBSD™, NetBSD™, FreeBSD™, Solaris™, SunOS™, AIX™, HP-UX™, Tru64™, Digital UNIX™, OSF/1™, IRIX™, OS/2™, and BeOS™.

The GIMP can easily be ported to other operating systems because of its source code availability.