Swank [L1 ] is a "graphical toolkit for use with Jacl", as its home page at http://www.onemoonscientific.com/swank/index.html summarizes. It permits those working in a Java environment to code against the Tk widget set rather than Swing or AWT.
Swank development is now hosted at java.net[L2 ].
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Other Tk-like-widget-sets include Proxy Tk and WebWiseTclTk.