DiscussionBox provides a forum-like typesetting for discussions taking place on LaTeX document sharing platforms like Overleaf. Compared to review mechanisms provided by such platforms, DiscussionBox enables non-volatile and structured conversations, somewhat similar to e-mail.
Check out tutorial.pdf and example.pdf/example.tex for usage.
.sty file can be installed in your LaTeX distribution. For Overleaf projects, simply copy tex/, tex/discussionbox.sty and latexmkrc files to the project folder.
Once installed, you can do a \usepackage{discussionbox}!