Brock Univ - LMS Options and Comparisons
This (fairly recent) comparison covers the non-subjective and comparable features of the main web-based Learning Management Systems (LMSs): ANGEL, BlackBoard, Desire2Learn, Moodle, Sakai and WebCT.
Click http://kumu.brocku.ca/webct/LMS_Options_and_Comparisons link to open resource.