A quick scan of sourceforge gives a bunch of projects whose name begins with tcl.  I'm going to trawl through them all.

   * http://tcldp.sourceforge.net/
   * http://tclines.sourceforge.net/
   * http://tcl-qt.sourceforge.net/
   * http://tcltk.sourceforge.net/
   * http://tcladdressbook.sourceforge.net/
   * http://tcldrop.sourceforge.net/
   * http://tclinux.sourceforge.net/
   * http://tclral.sourceforge.net/
   * http://tcltkaqua.sourceforge.net/
   * http://tclads.sourceforge.net/
   * http://tcl-edit.sourceforge.net/
   * http://tclipdnsmgt.sourceforge.net/
   * http://tclrar.sourceforge.net/
   * http://tcltkce.sourceforge.net/
   * http://tclae.sourceforge.net/
   * http://tcleftools.sourceforge.net/
   * http://tclish.sourceforge.net/
   * http://tclreadline.sourceforge.net/
   * http://tcltkmanpl.sourceforge.net/
   * http://tclagent.sourceforge.net/
   * http://tclengines.sourceforge.net/
   * http://tcljava.sourceforge.net/
   * http://tclresource.sourceforge.net/
   * http://tcltkskin.sourceforge.net/
   * http://tclap.sourceforge.net/
   * http://tclev.sourceforge.net/
   * http://tclkeymon.sourceforge.net/
   * http://tclrfb.sourceforge.net/
   * http://tcltktools.sourceforge.net/
   * http://tclapplescript.sourceforge.net/
   * http://tclex.sourceforge.net/
   * http://tclldap.sourceforge.net/
   * http://tclev.sourceforge.net/
   * http://tclkeymon.sourceforge.net/
   * http://tclrfb.sourceforge.net/
   * http://tcltktools.sourceforge.net/
   * http://tclapplescript.sourceforge.net/
   * http://tclex.sourceforge.net/
   * http://tclldap.sourceforge.net/
   * http://tclscript.sourceforge.net/
   * http://tcl-tlc.sourceforge.net/
   * http://tclbeauty.sourceforge.net/
   * http://tcl-fastcgi.sourceforge.net/
   * http://tcllib.sourceforge.net/
   * http://tcl-scripts.sourceforge.net/
   * http://tcltrf.sourceforge.net/
   * http://tclbitprint.sourceforge.net/
   * http://tcl-foundry.sourceforge.net/
   * http://tclmagick.sourceforge.net/
   * http://tclserv.sourceforge.net/
   * http://tclubbuilder.sourceforge.net/
   * http://tclcanvas.sourceforge.net/
   * http://tclfr.sourceforge.net/
   * http://tcl-mccp.sourceforge.net/
   * http://tclsharing.sourceforge.net/
   * http://tcludp.sourceforge.net/
   * http://tcl-c-builder.sourceforge.net/
   * http://tclft-win-beta.sourceforge.net/
   * http://tclmml.sourceforge.net/
   * http://tclshout.sourceforge.net/
   * http://tclunit.sourceforge.net/
   * http://tclcde.sourceforge.net/
   * http://tclgbp.sourceforge.net/
   * http://tcl-nap.sourceforge.net/
   * http://tclsoap.sourceforge.net/
   * http://tclvfs.sourceforge.net/
   * http://tclce.sourceforge.net/
   * http://tcl-gdbi.sourceforge.net/
   * http://tclnoc.sourceforge.net/
   * http://tclspeech.sourceforge.net/
   * http://tclvs.sourceforge.net/