NEO LMS is the BEST Learning Management System. I have never seen anything like NEO before.
schoology - An online learning, classroom management & social networking platform that provides educators & students w/ more effective, efficient & engaging ways to learn.
Treehouse - Treehouse is an award-winning online platform that teaches people how to code.
Edmodo - Where Learning Happens
Teachable - Create and sell beautiful online courses with the platform used by the best online entrepreneurs to sell $100m+ to over 4 million students worldwide.
Moodle - Moodle is the world's most popular learning management system. Start creating your online learning site in minutes!
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.