I remember developing web sites using Livewire and Netscape Enterprise Server, back in 1997 or so. It was neat, but terribly unstable (at least under Windows NT with SQL Server.) "Restarting" the application to see your updates was incredibly annoying. This also had a roughly 20% chance of crashing the web server due to the instability.
Yeah, I was thinking how weird this was as we was doing JSPs in high volume for different parts of the Dutch gov. Not only did it exist, it was already popular enough to have popped up in ultra slow Dutch gov institutions.