Nobody should be restricted by the software they use. There are four freedoms that every user should have:

  • the freedom to use the software for any purpose,
  • the freedom to change the software to suit your needs,
  • the freedom to share the software with your friends and neighbors, and
  • the freedom to share the changes you make.

When a program offers users all of these freedoms, we call it free software.

The GNU General Public License is often called the GNU GPL for short; it is used by most GNU programs, and by more than half of all free software packages. The latest version is version 3.

The GNU General Public License is available in these formats:
 HTML, plain text, ODF, Docbook, Texinfo, and LaTeX.

A Quick Guide to GPLv3 in available in PDF and reStructuredText formats.