This is a part of my sdr_snippets repo,containing a bunch of little hacks around Software Defined Radio.
Specifically, this is a quick, somewhat janky demo of the GNU Radio GRC-to-HTML thing I put together recently. This allows you to include GRC files directly into HTML pages with native HTML elements. This allows people to interact with them like web pages, including zooming and scrolling.
Another neat thing is that you can put multiple of these into the same place. Here, for instance, is a drop-down that lets you call up any of a handful of GRCs I've uploaded with this directory. Again, they're rough looking, but the idea is the key thing
This is an undertaker project. You can check out your own copy of it by doing a git clone of this URL (right-click and "Copy URL"). It contains everything needed to extend this project, including this webpage and all the scripts used to generate it.
Undertaker is a tool for managing the open source development/publishing/release process, which pulls your source code, documentation, blog posts, etc, all into a single static "gitball" for release. It can also generate static websites from locally-dynamic files, allowing you to have a project blog that looks dynamic but is actually statically published. This makes your content very friendly to archiving by tools like the wayback machine, and also to indexing by web crawlers. You can also publish all your content via trivial static webservers, including CDNs or just local files.