Folio WriterCo-writing without a server:
suggested edits & the Word round trip
Most collaboration tools solve co-writing with a server and an account. Folio Writer solves it with files: proposals, comments, and attribution ride alongside the manuscript, and Word — where your co-authors actually live — is a first-class citizen, not an enemy.
Suggest, don't overwrite
Select a passage and propose a replacement instead of making it: the suggestion appears as a diff, struck through in the proposing author's color, with the new text in the review popup. The author of every suggestion is recorded, so a chapter can pass through three hands and come back readable — and nothing lands until you accept it. Rejecting is one click; both are undoable.
Comments beside the text
Questions and remarks attach as anchored comments — highlighted in the editor, listed in the inspector, attributed, and resolvable. Comments re-find their passage as the text changes; one whose passage was deleted is kept and marked orphaned, because a question about a cut paragraph is exactly the question worth seeing.
The Word round trip
Your co-author doesn't have Folio Writer? Export a .docx where your suggestions are real Word tracked changes and your comments are real review bubbles. They edit with Track Changes on, send it back, and Import Review turns their file into suggestions and comments in your project — attributed, anchored, awaiting your accept/reject. The manuscript never stops being plain text on your side.
Tiers
Suggested edits and comments are part of the collaboration tools in Premium (7-day trial included); the Word round trip is the flagship of it. For handling a journal's reviewer comments specifically — response letter included — see the reviewer round trip.