TclAdaShell is a freely available Ada binding to Tcl/Tk. It is not a scripting language with an Ada-like syntax. With it, you can extend Tcl with Ada instead of C and you can use Tcl capabilities in an Ada program.
The software is issued under the GPL Version 2 with the following additional permission:
As a special exception, if other files instantiate generics from this unit, or you link this unit with other files to produce an executable, this unit does not by itself cause the resulting executable to be covered by the GNU General Public License. ...