AOL's web properties were heavily dependent on Naviserver with its embedded Tcl interpreter, which they bought cheap and turned into AOLserver.

The Vienna based university, TU-Wien, still runs AOLserver and serves 40K users with it. OpenACS.org and dotLRN.org still use the same Tcl-based webserver today.

Gustaf Neumann shepherded the development of the use of OpenACS/dotLRN at TU-Wien, I think: http://nm.wu.ac.at/nm/neumann