"Learning Management + Social Networking- Schoology is a free web-based learning management system (LMS) built on a social network. Schoology leverages the familiarity of popular social media tools to improve communication and collaboration."
Sophia is a first of its kind online social teaching and learnign platform that provides free academic content to educators. in beta testing since March, 2011, the site lets educators supplement their teaching methods with Web 2.0 tools to craete public or private learning environments
"At Key To School (KTS), we believe that Moodle is indeed a gift to all educators. However, it was observed that setting up and maintaining a Moodle server was an uphill task for many educators, not made easy by the restrictions imposed by many non-managed hosting providers. On the other end of the spectrum, the managed Moodle hosting was too costly for a first time Moodler who wanted to get acquainted for Moodle. We strive to ease both the learning curves well as provide the most affordable price - free, for all Moodlers. "
"Project Foundry is a proven online project based learning management system built by practitioners who understood the value of the pedagogy and inherent need for a streamlined tool that engages students and ensures meaningful academic results."