- comp.lang.tcl.announce- By using the service available at http://groups.yahoo.com/group/tcl_announce/ one can receive by email the postings of comp.lang.tcl.announce. Contact the owner at mailto:tcl_announce-owner@yahoogroups.com .
- ActiveTcl - http://listserv.ActiveState.com/mailman/mysubs
- AOLserver -- http://listserv.aol.com/archives/aolserver.html; also the bboard alerts at http://opennsd.org/bboard, http://openacs.org/bboard, and http://www.arsdigita.com/bboard.
- BLT -- http://lists.sourceforge.net/mailman/listinfo/blt-bugs and http://lists.sourceforge.net/mailman/listinfo/blt-users
- incr Tcl -- http://lists.sourceforge.net/lists/listinfo/incrtcl-users
- MacTcl -- http://lists.sourceforge.net/lists/listinfo/tcl-mac
- Palmsupport-tcl
- Starkit http://www.equi4.com/mailman/listinfo/starkit
- Tcl-Core -- http://lists.sourceforge.net/lists/listinfo/tcl-core
- Tcl-Pubs -- http://lists.sourceforge.net/lists/listinfo/tcl-pubs
- tcldb mailing list
- TclersWiki -- http://groups.yahoo.com/group/TclersWiki/
- TclHttpd -- https://lists.sourceforge.net/lists/listinfo/tclhttpd-users
- Tcljava/Jacl/Tclblend -- http://lists.sourceforge.net/lists/listinfo/tcljava-user
- Tcllib -- http://lists.sourceforge.net/lists/listinfo/tcllib-bugs http://lists.sourceforge.net/lists/listinfo/tcllib-devel
- tDOM -- http://groups.yahoo.com/group/tdom
- Tix -- http://tix.sourceforge.net/ has more information. Also, see [1].
- Tix -- http://tixlibrary.sourceforge.net/ has more information as well.
- [WinTcl] -- http://lists.sourceforge.net/lists/listinfo/tcl-win
- XOTcl -- http://alice.wu-wien.ac.at:81/mailman/listinfo/xotcl
There are web forums (different than mailing lists, I know) at Tek-Tips, http://www.tcl.tk/ , and perhaps elsewhere.
You might also check out http://aspn.activestate.com/ASPN/Tcl/Mail , where archives for quite a number of tcl mailing lists can be found.