Other tools that allow collaborative composition of research documents are Manuscripts.io and Overleaf.
Manuscripts.io is our sister application which is getting integrated more and more into Authorea: a powerful and simple authoring tool for complex documents. Manuscripts.io features very advanced science-specific features such as inline execution of computational notebooks, direct submission to journals, project management features, and complex citation styles. Manuscripts is free to use and Open Source.
Overleaf is a very popular and powerful editor for LaTeX. It enables simultaneous collaboration on LaTeX documents and is specifically suited to collaboratively produce PDF documents with mathematical notation and advanced formatting. In response to the Covid pandemic, Overleaf is temporarily giving Professional Accounts, free of charge, to any person in need of a collaborative, online authoring tool for their work (more
here).
Authorea is one among a handful available research-specific tools that enable collaborative writing. Authorea was built exactly to accelerate scientific discovery by boosting remote online collaboration. The mission and importance of research tools like Authorea is clearer than ever, in times like these, when most researchers are working from home. Authorea features a
word processor (with Rich Text, LaTeX and Markdown support) that enables multiple authors to work together on the preparation of scientific manuscripts, blog posts, white papers, posters, code, data, and computational notebooks. The blog post you are reading was written in and is hosted on Authorea. Authorea is entirely free to use for individuals who use it for academic purposes (students, as well as educators). Find out
here how to get a free account.