Instruct your users or manage your classroom with iTALC

Instruct your users or manage your classroom with iTALC: "Ghacks: 'iTalc is one of those programs that, when you see it up and running, is a thing of brilliance. But what is it? iTALC is a didactical tool that allows a teacher to view and/or control a students' PC on the internal network in multiple ways. It supports Linux and Windows and can be used in transparently in mixed environments.'"