Osterhout's commentary on the complementarity of Tcl and Java (Java
can be used to create new Tcl commands as C is now used to do).  On
the other hand AWT and Tk are competetive.

http://www.smli.com/research/tcl/java.html

EOLAS Applet patent technology for safe Tcl/Tk:

http://www.eolas.com/eolas/webrouse/webwish.htm