I'm a big fan of Wonderdraft (https://www.wonderdraft.net; $30). Windows & Mac; I'm finding it very stable unless you mess with JSON resources and get things wrong); it comes with a large stack of inbuilt resources and you can get around a 100 free resource packs on https://cartographyassets.com.

I dislike the idea of having to trust my files to a website which might not be supported. At least with the app chances are it'll continue to work on the same machine.