I've used a lot of Jekyll (and not much else!)

I ported lug.org.uk from Drupal to Jekyll. It's hosted on a Bitfolk VPS, but the code that creates it is here:

    https://github.com/lugorguk/lug.org.uk-website

I also ported oggcamp.org to the same host:

    https://github.com/oggcamp/oggcamp.github.io

I have a simple cron job that fires on lug.org.uk to poll the git repo. That's here:

    https://github.com/jontheniceguy/git-autoupdate

For sites which are not hosted at lug.org.uk, I've been a part of the team who host technw.uk, who use github pages to host their site:

    https://github.com/manchester-tech-events/manchester-tech-events.github.io

And, a while ago, I was part of the team who updated vagrantbox.es, although this has seen very little love since Hashicorp started running their own index:

    https://github.com/garethr/vagrantboxes-heroku

All the best,