I'll echo:
- Github Pages
Also you can look at: - https://neocities.org/ is ad free and free
Then if you're willing to compromise a bit, these are easy and free:
- Wordpress if you want to post an article. It'll put spam on your page though.
- Google sites is a good wiki style solution for posting a few things up with a wysiwyg editor.
- If you don't want it to be an html page, there is also google docs and google drive so you can share an artifact.