Who owns Tcl?
Tcl is open source. It is not owned by a single entity, but maintained by
a large community of developers worldwide. There is a
core team that manages the process
of improving Tcl over time (to ensure high quality, etc.) but neither
that team nor anyone else owns it.
What is the license?
Tcl uses a BSD-style open source license:
Tcl/Tk license.
Essentially, you can use it in any way you like. Most Tcl and Tk
extensions use the same license, but of course, you need to check
each one.
Can I use it in commercial applications?
Absolutely. Unlike with some open source licenses, there are no
requirements that you make your own code open source, or that you
release any changes that you make to Tcl and Tk (though if you'd
like to, that's great).
Can I get support? Training?
ActiveState is one of several
companies that provide commercial support for Tcl and Tk. They also
provide training, as do
Noumena and others.
Be sure to check the community pages for a
wide variety of support resources available in the community.
How long has it been around?
Tcl has been around since about 1988, and Tk since about 1989,
and they have both been very actively worked on continuously since then.
The Tcl history page provides some history
and a bit of a timeline.
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