Edit this Page. Free online collaborative editing system. Neat.
EditThisPagePHP is a tool for collaborative editing online. Pages can be made editable by authorized users, or anyone with something to contribute. Every version of a page is retained, so content is never lost. EditThisPagePHP combines features of:
- Blogs: optional user comments, sending and receiving trackbacks, and RSS feeds,
- Wikis: an edit-this-page button, page history, page diffs, and it can email users when pages change,
- Content Management Systems: multiple roles (by default a reader, an editor, and a super-editor), each with different privileges.