[avivo]

It looks like it provides out of the box support for Overleaf! (Collaborative LaTeX editor) https://www.overleaf.com/blog/635-languagetool-a-free-browse...

This is not true of Grammarly last I checked, you have to hack something together... (e.g. https://medium.com/@tardijkhof/how-i-made-grammarly-seamless... )

[barankilic]

If you use VSCode as a text editor, you can use it locally on LaTeX files using LTeX extension (https://marketplace.visualstudio.com/items?itemName=valentjn...)

[ushakov]

and if you're into Markdown, i can also recommend prosemd

https://github.com/kitten/prosemd-lsp

[herschel666]

This is correct, there's first-class Overleaf support. https://languagetool.org/overleaf