I wrote my own one also. It's ~100 lines of Go, generates the raw html that I commit to Git and which CloudFlare Pages automatically then deploys from a sub-folder for me.

I don't need to set up S3, Varnish, a server, a database, making sure my server + cms is up to date. It costs me $0, it's on a cdn and it's lightning fast + no headache. What's not to like?