ShareLaTex VS Laverna

I guess this is a competitor to services such as overleaf [1] and codimd [2]. Although this is yet another syntax, it seems to be supported by pandoc [3]. Lately, I have been using Quarto [4] more and more as I program in R, which also produces very nice outputs, especially HTML. But none of these solve the academic usage problems of (1) producing nice diffs for reviewers, and (2) can easily be shared with, and commented by, non-technical collaborators. Thus, I fear Word will be difficult to replace for many years, at least in my field, for scientific writing

[1] https://github.com/overleaf/overleaf

[2] https://github.com/hackmdio/codimd

[3] https://pandoc.org/typst-property-output.html

[4] https://quarto.org/

Looking at the commits history[1], they are very probably using something else than (public) GitHub for many Pull Requests. On Friday, there were 7 pull requests merge and more commits referencing merge requests not available on GitHub.

[1] https://github.com/overleaf/overleaf/commits/main/

you can already self host it https://github.com/overleaf/overleaf

Mostly open source... Here's the repo: https://github.com/overleaf/overleaf. But you can see what features are only available in the paid versions here

Overleaf's license. I highly suggest reading point 10. I only skimmed it, but there are probably other pertinent details.

Look at the project license: https://github.com/overleaf/overleaf/blob/main/LICENSE