A movement characterized by a body such as the Open Software Foundation which believes that, as a minimum, the code of software systems should be available to all so that individuals can tailor a system or provide add-on software or support software for it. The more extreme members of this movement advocate the removing of copyright and patent laws from software so that products become a free commodity. The open source movement is best exemplified by the community that has grown up around the Linux operating system. This operating system, a clone of UNIX, is freely available in source form to any developer in the world. See also Mozilla.