5: What are FSF, LPF, OSF, GNU, RMS, FTP, and GPL? FSF == Free Software Foundation LPF == League for Programming Freedom OSF == Open Software Foundation GNU == GNU's Not Unix RMS == Richard Matthew Stallman FTP == File Transfer Protocol GPL == GNU General Public License NOTE: Avoid confusing the FSF, the LPF, and the OSF. The LPF opposes look-and-feel copyrights and software patents. The FSF aims to make high quality free software available for everyone. The OSF is a consortium of computer vendors which develops commercial software for Unix systems. NOTE: The word "free" in the title of the Free Software Foundation refers to "freedom," not "zero dollars." Anyone can charge any price for GPL-covered software that they want to. However, in practice, the freedom enforced by the GPL leads to low prices, because you can always get the software for less money from someone else, because everyone has the right to resell or give away GPL-covered software.