I was into Tcl (and Tk) in the mid 90's. There was a great database that I think had Tcl bindings called Qddb (quick and dirty database). I used these to hack together a few Web cgi-bin applications. One was a super fast library catalogue (something like 10 times quicker than the proprietary one I imported the catalogue data from). The other one I like to think as my "almost invented Facebook" moment. It was a template driven web application that allowed you to publish your profile page (and of course edit it in the browser) and also project pages. It got some use within the multinational resource company I was in as a way of improving collaboration in those early web days.