Enterprise Resource Planning

Just a few years ago, toward the end of the '90s, ERP epitomized
Big, Serious Programming.  It was entirely comparable to such more
recent management fads as CRM, EAI, eBusiness, ...

Remarkably, given all the grief heard about how the only [applications in Tcl and Tcl/Tk]
are "toys", there's at least on ERP package
[http://www.wyatt-erp.com]
written in Tcl/Tk.