A fair number of people who seek out an open source LMS have a major misconception that it is free. Over 60% people want to choose an open source LMS while looking for a solution to manage their learning cycle is because they have no license fee and is supported by a large; very large community. Yes it is an open source and it is free! But dig further and you will find out that free does not mean you have no costs. Dig a little further and you may actually find that you could spend more on your open source LMS than a proprietary LMS.
As per Wikipedia, “Moodle (acronym for Modular Object-Oriented Dynamic Learning Environment) is one of the most popular ‘free’ software e-learning platform (Learning Management System), or Virtual Learning Environment (VLE). As of June 2013 it had a user base of 83,008 registered and verified sites, serving 70,696,570 users in 7.5+ million courses with 1.2+ million teachers.” So, yes the stats shows the tremendous amount of user base and faith Moodle has built in the last 15 years of its conception. Moodle is used by various kinds of users: