WiZIQ or Wiz - IQ is a free online collaborative workspace and virtual classroom environment.Similar to some of our other posts, this is an online environment with a virtual workspace that allows you to invite in users and share an interactive whiteboard experience: pdf, word, powerpoint, and images. You can also search their repository for information.
One additional item that is of some interest is that they have a area where you can upload test questions. Yes, online tests - built by users and shared into this environment. You just pick from the list provided or search a topic and the system gives you tests questions in a multiple choice format.
So here is another free tool in my quest to find more free online workspaces for collaboration and information sharing between students and teachers or teachers and teachers.