I'm not sure why nothing is here, but the web page for TclPro is:

http://sourceforge.net/projects/tclpro

and

http://dev.scriptics.com/software/tclpro

[ActiveState] has created ASPN Tcl, which includes an updated, quality-assured version of TclPro.  More info on that at http://www.activestate.com/Products/ASPN_Tcl/.

TclPro consists of a code checker, GUI debugger (i.e. the debugger has a GUI, rather than being a GUI debugger), a byte-code compiler and wrapper and some extensions(TclX, Expect, [[incr Tcl]] ...) and tclsh/wish.

Oh... and it's open source these days.

Try getting the file named FREE_KEYS from
ftp://ftp.scriptics.com/pub/tclpro/download/ and I think you'll have
better luck.  For the FTP impaired, and for the records of all the great news search engines, I'll include all 671 bytes here.

  With the acquisition of Scriptics/Ajuba by Interwoven the
  TclPro product line has been discontinued and moved into
  the open source community.

  The files in this directory require license keys in order to
  use the development tools (e.g, TclPro Debugger, TclPro Checker,
  TclPro Compiler, and TclPro Wrapper).  Here are keys for
  different versions.

  TclPro          (Tcl/Tk)        Key
  1.2             8.0.5           1K14-2207-0H34-1U24-R8ZJ
  1.3             8.2.0           1V45-2209-1G37-1U35-R8Y6
  1.4.1           8.3.2           1094-320C-1G38-2U24-P8YY

  If you run the TclPro network license server, the keys are different:

  TclPro          Key for 10 seats
  1.2             2N06-0H35-04U2-5R8Y-X2H0
  1.3             2M09-1H27-04V2-5P9Z-188S
  1.4.1           2M1C-1H28-34U3-4P8Z-DRG2


----

And for those peeking in, version 1.5 for TclPro was released during 2001, without license key issues.