IndieWeb Publisher is an open source fork of the responsive Independent Publisher theme for WordPress that streamlines its code and adds some additional IndieWeb friendly functionality to the original semantic theme.
The original theme was developed by Raam Dev and was extended by David Shanske. The source code is available on GitHub. Feedback and Pull Requests are more than welcome. As of 2019-02-01 this theme is not yet available in the main WordPress Theme repository, so it will need to be downloaded from GitHub directly.