I used to run LaTeX on my 3 machines, switching between them based on compute/portability of the machine, and used a git repo for syncing. So it doesn't give me something novel; but the convenience of overleaf has been amazing. Once you get used to the "write and forget" model, it's hard to go back (but still doable).<p>It especially shines when you have to collaborate. The convenience of small features also add up, such as being able to leave comments for your collaborators, clicking on the LaTeX document to have the PDF viewer scroll to the corresponding location, and vice-versa (doesn't work exactly the same way, but close), having a fast compile mode that keeps recompiling as you make changes (good for editing, distracting for writing, but ymmv), being able to click on the toc that is generated by overleaf in a side panel.<p>Maybe other tools do some of these things, but having all of them in place is nice.