Totally, in business critical systems for all sorts of stuff. Rewriting it would be enormous effort and provide no business benefit and be full or risk of intr

Totally, in business critical systems for all sorts of stuff. Rewriting it would be enormous effort and provide no business benefit and be full or risk of introducing new (or re-introducing old) bugs in the process of converting to some whiz-bang c# or whatever is trendy. We even built custom integration modules (DLLs in Visual C++ 6 for anyone curious). They integrate to legacy AS/400 systems and the interfaces used are totally legacy and unlikely to be easy to integrate with c++ 2015. So, we're absolutely still using Tcl (and Tk) in 2015 and it is still relevant. It will be in use until the company (or the sun) implodes. I do hate the syntax though. Yuk. [edit: I see others commenting that that's the thing they like ! I'm obviously an outlier or our code sucks more than most.]