Dillo uses something similar with rdrview, you can use rdrview://$URL (altough I hacked the dpi plugin to use the rd:// 'protocol' for shortness).

It lacks the filter thingy but now has the dilloc tool where it can print the current URL, open a new page... and with sed you can trivially reopen a page with an alternative from https://farside.link

You know, medium.com -> scribe.rip and the like.

But Dillo is not a terminal browser, altough it's a really barebones one and thanks to DPI and dilloc it can be really powerful (gopher, gemini, ipfs, man, -info in the future) and so on available as simple plugins, either in sh, C or even Go) and inspiring for both offpunk and w3m (where it has similar capabilities as Dillo to print/mangle URL's and the like).

What I'd love is to integrate Apertium (or any translating service) with Dillo as a plugin so by just running trans://example.com you could get any page translated inline without running tons of Google propietary JS to achieve the same task.

I love the https://linux.org.ru forum and often they post interesting setups but I don't speak Russian.