http://www.pitt.edu/~super1/lecture/lec35331/

http://en.wikipedia.org/wiki/Wiki

http://en.wikipedia.org/wiki/Learning_management_system

http://en.wikipedia.org/wiki/Open-source_software

http://moodle.org/

http://wik.ed.uiuc.edu/index.php/Moodle

http://wikieducator.org/Main_Page 

http://www.networkedcollab.org/vles/2009/07/moodle-and-other-lmss/

http://elearningtech.blogspot.com/2009/03/lms-and-social-learning.html

http://edutechwiki.unige.ch/en/Learning_management_system