You can [see a working example here](https://leonstafford.github.io/demo-site-wordpress-static-html-output-plugin) of a plain WordPress install which has had a few tweaks done to optimize it for static HTML output. It is hosted on GitHub Pages, but could just as easily be hosted on Dropbox, BitBucket, GitLab, S3, your own server or anywhere else you can host HTML files.
This repo contains the latest code, which you can clone/download to get the bleeding edge, else install via the [official WordPress Plugin page](https://wordpress.org/plugins/static-html-output-plugin/)
If you'd like to contribute, please follow the usual GitHub procedures (create an Issue, fork repo, submit PR). If you're unsure about any of that, contact me and I'll be happy to help.
Development is done in my personal time. If you would like to see some new features added, bugs fixed, etc, think about sending me a donation for motivation ;)
## Contact
Email me, Leon Stafford, at [lionhive@gmail.com](mailto:lionhive@gmail.com)