Z:gnu-www-ja-2001-09-24-CPI--94b019-The Free Software Foundation p/en

The Free Software Foundation promotes the development and use of Free Software&mdash;particularly the GNU operating system and its GNU/Linux variants&mdash;and Free Documentation for Free Software. GNU/Linux is the integrated combination of the GNU operating system with the kernel, Linux, written by Linus Torvalds in 1991. The various versions of GNU/Linux have an estimated 20 million users worldwide.