The closest you can get is the Seamonkey browser, which forked off the old Mozilla Application Suite that Netscape 6/7 was based on. The last version of Netscape 9 was just a rebranded Firefox 2.x.

Just remember we got rid of TLS 1.0 the same thing can be done with IPv4. It’s time for browser makers to put “deprecated technology” warnings on ipv4 sites.

I just hope Ofcom will have a similar idea for the UK. Currently you only have a “universal service obligation” for 10Mbps, and if you can be provided by 4G then Openreach doesn’t have to upgrade your old copper line. Large areas of my city are still copper only.