This is a copy of the GNU General Public License. Those wishing to see the original can do so by visiting the Free Software Foundation Web site. The direct link to the license is as follows.
On that Web site, you may also want to check out the comparative list of license types (both commercial and noncommercial) and how they compare with the GNU GPL. Most interesting here is the definition of whether a license qualifies as free and whether it is compatible with the GPL. That address is here.
Now, without further ado, here is the GNU GPL.