Grammarly does not work with LaTex, but I believe it still can be helpful:
I like to use Grammarly Chrome extension with an online Latex editor. I tried sharelatex, overleaf , authorea and verbosus on Chrome. Even though the Grammarly icon on the top right seems active, it doesn't work:
If you have Grammarly installed and try to write a question/answer or comment while on a StackExchange website, you can see that it works (the small red or green circle on the bottom left of the text frame shows the number of errors and gives the proper hints).
Do you know any way to force Grammarly to work on Chrome or another browser / OS / Website ?
Best Answer
I used to copy and paste, as Hamid suggested until recently. I created a chrome extension that copies the .tex content; filters the commands/keywords and pastes the plain text in a textarea. This textarea is displayed over the pdf preview and all textareas are scanned by Grammarly.
It is not yet on the store, but you are able to install it if you are only a bit technical. You can find it here: https://github.com/robindijkhof/overleaf-textarea
EDIT: I created a new version. Changed made by Grammarly are automatically merged back to Overleaf. I published it to the Chrome store, it is currently waiting for a review.
EDIT: It is now available from the store. https://chrome.google.com/webstore/detail/overleaf-textarea/iejmieihafhhmjpoblelhbpdgchbckil
EDIT: JFYI, it's also available for Firefox: https://addons.mozilla.org/en-US/firefox/addon/overleaf-textarea