Meet Collabio Spaces: An office suite app with a cloudless co-authoring twist that looks helpful if you need to collaborate on documents without having to worry about losing control of your data or the thread of changes. The p2p software lets. multiple people co-edit a document locally — from a mobile device or desktop computer — without the risk of uploading sensitive information to the cloud (i.as you must if you’re using a shared document function of a service like Google Docs); or the tedium of emailing a text to multiple recipients and then having to collate and resolve changes manually, once all the contributions trickle back. .
Link: Collabio lets you co-edit documents without the cloud