Whether you call it a Learning or Content Management System, there are many to choose from. Fortunately, I had the opportunity back in 2004 to take advantage of the resource provide by the Oracle Education Foundation called think.com or thinkquest.org.
At my school, in the first year, we piloted this resource on one grade level. The student use and engagement was high, however teacher monitoring and use was low.Since then, truthfully, noone used besides me.
This year, I decided to share access to the Careers & Technical Education (CTE) department. So far they are using the site daily and are experiencing success! Students are able to collaborate and teachers are able to communicate and assign tasks just like in Moodle or Blackboard.
If you are interest in using this resource at your school, just follow the steps to enroll on the main page.