DocVerse is a Microsoft Office plug-in which uploads your Office file every time you make edits to it or save it. Group members can all have simultaneous access to the same file and edit it; the edits are incorporated into the Office file and the URL of the uploaded file stays the same. The file creator first needs to register for a free DocVerse account so that the uploaded Office file is secure. The creator can then select the group members who will be spectators to the editing process and the ones who will be editors
https://www.docverse.com/main/index/
https://www.docverse.com/main/index/