1/ For the last 6.5 years NH has had a registar of deeds website that required installing a very specific version of Java (no, not Javascript - JAVA - do you remember the 6 months back in 1995 or so when there was no sandbox and apps ran outside the browser?)
I simplified. County level. But I think the various counties share the same software. Our town level tax website is likewise "town level", and most - but not all - towns opt into a compact that shares one website.