Specific program links to collaborative documents given in this page. Check out the main domain (classroom20wiki.com) for a great site on other topics, as well.
Online collaboration allows students or groups to work together without actually being face-to-face. Online collaboration keeps track of the most current version of a document and still has the previous versions available. This is a very efficient way for groups to work on documents together and keep track of changes and what is happening in a document.
I would use Office Live in my classroom by giving it to students as an option for completing their work collaboratively with other students from the comfort of their own home. I think that group work is key to helping students really grasp concepts and taking responsibility for portions of assignments so, while I would not use this as a platform for teaching or providing feedback, I would present this to my students who need a way to work together outside of school.
The account holder holds the control of this tool. A user doesn't have to download documents to the computer to view them. It has ways to plan ahead through task management, group calendars and a birds eye view of a timeline. It has a discussion board. Information can be share easily.
This is a great collaborative tool that we have used in class so you should have a little experience with it. Google doc is easy if you are familiar with a word processor program.
After exploring meetifyr I found it to be extremely easy to create a calendar document to set up a meeting or event. I believe I could use this tool with my co-workers in the future to help organize committee meetings within our school, and all student events like performances, games,etc.
A.nnotate is an easy way to annotate documents online and collaborate annotating and note taking with peers. I don't think I would use this in my classroom, I think it would be better used as a personal study tool; one that the teacher could recommend to students looking for help with their study skills but I would not require it.