Wizehive combines a form builder, task manager, activity feed and workflow sheets. Educators and teachers can use it to share projects and assignments with their students. They can also use it to share conversations, notes, tasks, calendars, files and all other kinds of data. It is very secure and private so no issues for your students or their parents.
Users can enter what they want to share with others either from withing Wizehive, via emal or from Twitter and other mobile devices.I believe this is a great collaborative tool that students can bebenfit from a lot. It does require a sign up but does not call for any software download or registration.
Head over to Wizehive and give it a try.