For IT directors at schools debating whether to use Sakai or Moodle as a course management solution, here is a side by side comparison. All signs point strongly towards Moodle kicking Sakai's butt and to the Mellon Foundation, Hewlett Foundation, and Sakai Partners wasting $6.6M.
Moodle: $0 initial funding and ~ $12,000 a year from individual donors.
Sakai Project: $2,200,000 initial grant from Mellon Foundation and Hewlett Foundation and $4,400,000 from core partners.
* Alexa statistics are definitely suspect. I would love to see more reliable data. If anyone has access to better data please get in touch.