- http://www.ActiveState.com/Tcl
- https://www.google.com/
- http://www.eurotcl.eu/
- https://www.activestate.com/activetcl
- http://www.bawt.tcl3d.org
- http://www.magicsplat.com/tcl-installer/index.html
- https://www.irontcl.com
- https://www.tcl.tk/software/tklib/
- https://www.tcl.tk/software/tcllib/
- https://wiki.tcl.tk/9356
- http://komodoide.com/tcl/?utm_source=tcl-tk&utm_medium=banner&utm_term=&utm_content=komodo-by-AS-170x124&utm_campaign=tcl-tk-site
- http://wiki.tcl-lang.org
- http://www.tcl-lang.org/man/tcl8.6/
- https://core.tcl.tk/
- https://tip.tcl-lang.org
- http://aspn.activestate.com/ASPN/Mail/Browse/Threaded/tcl-core
- https://groups.google.com/group/comp.lang.tcl