Gregory's Server
@Ralph From reading through the Wikipedia page, Nvu was an active project from 2004 to 2005, then shelved in favor of KompoZer, which was an active project until 2010.
SeaMonkey is still an active project and includes Seamonkey Composer, a descendant of Mozilla Composer.
https://www.seamonkey-project.org/
@foolishowl
Cool, I was actually using IceApe, which was the Debian (copyright free) version of Seamonkey. I didn't want to go down that rabbit hole unless you were already versed in Linux branching.
Good luck with your quest for HTML simplicity!