Expect has had remarkable longevity, though I'd say the greatest impact of Tcl has been though *sqlite* which started as a Tcl extension and still uses Tcl in i

Expect has had remarkable longevity, though I'd say the greatest impact of Tcl has been though *sqlite* which started as a Tcl extension and still uses Tcl in its development. Sqlite is used so very widely, hard to find any major software that doesn't incorporate it. I guess Tcl is nearly everywhere, under the hood anyway.