1. TkThe Tk Widget Toolkit For Tcl (Mirror of core.tcl-lang.org)
2. TclThe Tcl Core. (Mirror of core.tcl-lang.org)
3. itclAn object-oriented extension to Tcl. (Mirror of core.tcl-lang.org).
4. tklibtklib (Mirror of core.tcl-lang.org)
5. tcllibtcllib (Mirror of core.tcl-lang.org).
6. tclooTcl OO Package (for Tcl 8.5, integrated in 8.6). (Mirror of core.tcl-lang.org)