Creative Commons
Creative commons licenses provide a flexible range of protections and freedoms for authors, artists, and educators.
http://creativecommons.org/
Free Documentation License (FDL)
Free Documentation License (FDL)
http://www.gnu.org/licenses/fdl.html
General Public License (GPL)
General Public License (GPL)
http://www.gnu.org/licenses/gpl.html
Lesser General Public License
Lesser General Public License
http://www.gnu.org/licenses/lgpl.html
OpenSSL License
Openssl license agreement.
http://www.sdisw.com/openssl.htm