BSD also refers to the BSD license agreement that allows free use and copying of source code, without the more stringent requirements of the [[GNU GPL]]. BSD is currently the most popular UNIX like operating system in terms of users, represented primarily by the 1,490,000 Mac OSX users worldwide. | BSD also refers to the BSD license agreement that allows free use and copying of source code, without the more stringent requirements of the [[GNU GPL]]. BSD is currently the most popular UNIX like operating system in terms of users, represented primarily by the 1,490,000 Mac OSX users worldwide. |