Collaborative writing platforms.

A summary of features that differentiate Manubot from existing collaborative writing platforms. We assessed features in June 2018 using the free version of each platform and updated our assessment in April 2019 to add the features in the bottom three rows and re-evaluate Authorea and Overleaf. Some platforms offer additional features through a paid subscription or software. 1) Additional functionality, such as bibliography management and tracking changes, is available by editing the Word document stored in OneDrive with the paid Word desktop application. 2) Conversations about modifications take place on the document as comments, annotations, or unsaved chats. There is no integrated forum for discussing and editing revisions. 3) In some circumstances, Overleaf Git commits are not modular. Edits made by distinct authors may be attributed to a single author. The GitHub Sync feature attributes all edits to the project owner.