Open Source http://www.fordfoundation.org/library/reports-and-studies/roads-and-bridges-the-unseen-labor-behind-our-digital-infrastructure/ http://www.dr-chuck.com/sakai-book/ http://www.dr-chuck.com/csev-blog/2014/09/how-to-achieve-vendor-lock-in-with-a-legit-open-source-license-affero-gpl/