TeacherTube

http://teachertube.com

A safe environment, allowing school systems to have choice over content and features. It provides a way for teachers to benefit from the power of web 2.0 technology for professional development and  instructional resources.  TeacherTube Onsite is a single license software that can be placed on one server for complete school system use. TeacherTube Onsite Unlimited is a license that allows placement on an unlimited number of servers in a school system.