If you need free hosting to test HTMLy, try OpenShift from Red Hat. I already made a quickstart to run HTMLy easily on OpenShift.
Visit the HTMLy quickstart on Github and read the step by step tutorials there.
Yesterday I committed a few changes, now HTMLy using cache index for the file url, and save it as a txt files format. Hopefully this will reducing CPU usage.
If you want to try it, download the master branch here.
Welcome to htmly.com the official site for an open source project HTMLy.