My university is currently using moodle, as far as I can see it's working fine. It's replacing and older custom application, built on liferay (or alfresco? can

My university is currently using moodle, as far as I can see it's working fine. It's replacing and older custom application, built on liferay (or alfresco? can't really remember). However, it's doing okay. And it's scaling fairly big (~40-45k users).