Sakai is a community of academic institutions, commercial organizations and individuals who work together to develop a common Collaboration and Learning Environment (CLE). The Sakai CLE is a free, community source, educational software platform distributed under the Educational Community License (a type of open source license). The Sakai Project’s software is a Java-based, service-oriented application suite that is designed to be scalable, reliable, interoperable and extensible. Version 1.0 was released in March 2005. As of September 2012, Sakai is estimated to be in production at over 300 institutions and being piloted by considerably more.
Learn more at www.sakaiproject.org