Titan Pad is a great web tool for educators. It provides a free collaborative workspace . It is based on EtherPad set up to enable users to work on their documents in real time. This is similar to Type with Me that I covered earlier. These collaborative tools do not require any sign up and they are all web based.
To use TitanPad, head over to its homepage, click on 'create a Public Pad'. Once created, you can then share the URL of this pad with your friends and people you want work with. There is also a chat window to talk to your colleagues while working on documents.
Watch this video tutorial to learn more