A Tcl extension that allows one to use object oriented programming concepts from within Tcl and provides a tight object-oriented coupling to C++. Can be used freely for non-commercial purposes; email the contact for commercial use licensing details. A version 1.1 was in development in the mid-90s.
The author of this version was David Young.
Dean Sheenan had an Object Tcl at http://www.visionware.com/tech/ObjectTcl/cover.html which was oriented towards binding C++ classes to Tcl. There was talk back in 1996 of trying to merge his work with incr tcl.