I forgot LiveWire existed. One of few that finally faded from memory. Of old & commercial ones, AOL server + a TCL web framework are still getting updated. Opera is getting redone. The product with the coolest name is still scraping by per .cfm pages I see. Some ancient tech still around but mostly going bye bye.

Only thing left is maybe to redo Mosaic in Ruby or Java to see if it's technically feasible to slow its rendering down any further.