Write without fear of losing or overwriting a good idea
Web Collaborator coordinates collaborations automatically, keeping backups of every revision ever made to the project, letting you see who made the changes, and allowing you to focus on the work instead of managing the work. Better yet, it is absolutely free for all uses.
CoWord allows multiple users to edit the same MS Word document at the same time over the Internet.
BSCW (Basic Support for Cooperative Work) enables collaboration over the Web. BSCW is a ’shared workspace’ system which supports document upload, event notification, group management and much more. To access a workspace you only need a standard Web browser.
Systems available on the Web; articles about writing, design and use of systems, the Web, collaborative work and groups; research labs; and my classification system for Web-based collaborative writing systems. More collbaorative tools available here.