Comparativa de plataformas de e-learning
http://www.edutools.info/course/compare/index.jsp
http://www.osc.edu/textonly/education/webed/Tools/chart.shtml
http://software2.bu.edu/webcentral/research/courseware/
http://www.futureu.com/cmscomp/cms_comp.html
http://www2.haverford.edu/mellon3/Events/CMSEvaluation/EvaluationSummaries/Blackboard.html
http://www.ctt.bc.ca/landonline/
http://www.edulab.ull.es/html/principal/index.shtml
http://www.gate.upm.es/plataformas/herramientastele/index.htm
http://www.edutech.ch/edutech/tools/products_e.asp
http://www.centrinity.com/~kathryn_cook/FirstClass_vs_Blackboard.pdf
http://www.uwec.edu/citi/groupware/compare.htm
http://www.ust.hk/celt/ideas/olt/technicallyspeaking/technicallyspeaking.htm
http://www.sunderland.ac.uk/pp2/links.htm
http://online.tamus.edu/council/committees/technology/lms.php
http://home.hetnet.nl/~wilfred07/oudniews.html
http://www.uwec.edu/Doc/Wrapup/wbls.htm
http://www.ntlf.com/html/sf/vc93.htm
http://astro.temple.edu/~jburston/CALICO/review/webct-bb00.htm