Adobe InCopy

You can only RENT this because of Adobe's greed with their Creative Cloud subscription model. There's a petition against it with over 30,000 sigs so far... https://www.change.org/petitions/adobe-systems-incorporated-eliminate-the-mandatory-creative-cloud-subscription-model

For a web site? This is a writers tool who goes to print on a deadline it links into InDesign. For a web I can't see it being a great help unless you write in a team. Great application that lets writers and designers work closer in the print world. Great application but not much use for drafting I would still use just a small text editor for that. On web site your better implementing a content management system and writing directly into it out of a text editor. Great application from Adobe if your doing print publication with a writing team and design team.

I downloaded the demo from Adobe, and have used it to write two articles for my soon to be launched web site. So far, I really like this product. The three views (galley, story, etc), are a huge help in checking where you are in copyfitting as well as story structure. Another big plus: great typographic commands, such as thin and hair-spaces, available directly from the menu. Love that feature! I'll write a more extensive review shortly, but for now I suggest you download the demo and check it out.