it's a pretty fun exercise to download the earliest mosaic browser you can find and get it to build on your current platform. Then to see what sites actually still work. The last time I did this, Dennis Ritchie's site loaded the best.
It can only display one site per IP and port.
Would be nice to see an HN update that converts jwz links to non-clickable.
It was interesting to see just how easy it can be to get software to build a whole 25 years later.