Here's a free tool I made recently that might be useful for writers. The popular scriptwriting software Final Draft exports HTML, but it's 'preformatted', meaning all the line breaks and spacing are hard-coded. So, while you can insert it into a web page, it won't flow to fit different screen sizes, and tends to look terrible on mobile devices especially.
I've made a fairly eclectic set of stuff in recent years, from apps to hardware projects. Check out the list here.