TeamViewer - TeamViewer lets you establish a connection to any PC or server within just a few seconds.
SmartMedia Pro - Smartmedia Pro Classroom Management Software allows remote-control of classrooms and virtual classroom management.
mRemoteNG - mRemoteNG is a fork of mRemote, an open source, tabbed, multi-protocol, remote connections manager.
CSE Classroom Manager - Technology for Education
join.me - Instant screen sharing. Instant Aha!
DyKnow Cloud - DyKnow Cloud shows teachers how students use their time and helps teachers keep devices useful for learning.