A Virtual Learning Environment is an e-learning software platform used in schools, colleges and universities to provide learning resources via the internet. Moodle is one such platform, free to use and open for everyone to modify.
Moodle, or Modular Object-Oriented Dynamic Learning Environment, is a free and open-source e-learning software platform, also known as a Course Management System, Learning Management System, or Virtual Learning Environment.
Virtual Learning is designed to help educators create online courses with opportunities for rich interaction. Its open source license and modular design mean that people can develop additional functionality.
It has a significant user base with 52,153 registered sites with 30,176,528 users in 2,770,832 courses (as of March, 2009).