I'm glad people like it!!! I'll keep working on improving the site and adding support for more SDRs and OOTs. My initial motivation for creating GNU Radio World was to have a way to embed interactive examples into PySDR.org, which I have started to do, eg see https://pysdr.org/content/sync#frame-synchronization. I think GNU Radio World has a lot of potential directions it could go, and if anyone is interested in helping out with it feel free to join the Discord server or email me.

-Marc