I was just today looking for an AHK alternative for a new Ubuntu Studio system I recently set up, somehow I didn’t come across this one. It’s exactly what I need, specifically the support for application-aware and input-device-aware mappings. The cross platform support using the same scripts is also intriguing. I will be trying this out soon, thanks for suggesting it!

It is not FOSS, but it is usable as a webpage instead of an app. https://radio.garden/

Are there ads on the webpage too? Who knows, that’s what adblock is for.

With opnwrt you can do DNS hijacking, where you force redirect DNS requests for other servers to your own DNS server. This works as long as they aren’t encrypted (DNS over HTTPS or TLS), which most devices don’t use.