The question has been very frequently raised for at least the last ten years.
Maybe there is such an archive--several, in fact ... [explain].
[Explain history of unappreciated efforts.]
[Explain pertinence of Stubs as historical explanation.]
[Explain what teapot is about.]
LV Such an archive doesn't arise in a vacuum. It requires the work of the community, both from the creation point of view, on-going running, and contributions from distributors.
As one reads through comp.lang.tcl, as well as other web forums, wiki pages, etc., one will see references to TEAPOT, CANTCL, procplace, [add some of the other attempts here]. Each time, either the community failed to rally behind the effort, or the developer didn't have the time and resources necessary to set up things to work so easily.