Europa [http://www.eclipse.org/europa/] is the 3.3 major release of the Eclipse Java IDE platform.

An interesting component is the DLTK project [http://wiki.eclipse.org/Dynamic_Languages_Toolkit].
This essentially brings IDE capabilities to dynamic languages.
They currently feature Ruby and... TCL!
This is an exciting development since it exposes to large number of developer eyeballs.

[XO] 2007-12-14, Why not taking a 03:10 minute video tour presented here at... [http://live.eclipse.org/node/311], where a Tcl ''mymath'' package is driven by a test script, to convert decimal numbers into binary representations, an error was planted into ''lappend'' command inside the ''mymath'' package on purpose, in order to illustrate the debugging processes within Eclipse DLTK, typical breakpoint, step into, step out, step over,... watch variables were very nicely organized & presented. Enjoy the ride!