"Sean Levy"  has hacked a version of Emacs`s C mode into
a tcl-mode.el.  He mentions that you must use semi-colons at the end
of each statement to get indentation to work right, but he found that
easier than doing without.

The code is on [128.2.214.236]
ftp://ftp.cs.cmu.edu/afs/cs/user/snl/pub/tcl-mode.el.z
(don`t forget binary mode) as well as
ftp://harbor.ecn.purdue.edu/pub/tcl/distrib/tcl-mode.el.Z .

"Julian Anderson"  was also working on an Emacs Tcl
minor mode to fundamental.

"Chris Lindblad"  has contributed tcl.el, a Tcl mode for
GNU emacs.  It`s address is
ftp://harbor.ecn.purdue.edu/pub/tcl/extensions/tcl.el .

tromey@cns.caltech.edu (Tom Tromey) has contributed tcl-help.el, an
Extended Tcl help mode for GNU emacs.  It`s address is
ftp://harbor.ecn.purdue.edu/pub/tcl/extensions/tcl-help.el .
It is also located at
ftp://archive.cis.ohio-state.edu:/pub/gnu/emacs/elisp-archive/modes/tcl.el.Z
It is also on harbor.ecn.purdue.edu in the pub/tcl archives somewhere.

schmid@fb3-s7.math.TU-Berlin.DE (Gregor Schmid) has written a major mode
for tcl scripts.  He posted tcl-mode 1.1 to gnu.emacs.sources in March and
it should appear on
ftp://archive.cis.ohio-state.edu:/pub/gnu/emacs/elisp-archive/modes/
shortly.