| Mac widgets for Tcl/Tk -- TclMacBag A Tcl extension which provides modern Mac OS X style widgets on Mac, and appropriate Tile fallbacks when used on other platforms. By Peter Caffin. |
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| Tcl/Tk error feedback extension -- TclTalkback A Tcl extension which provides error feedback to software developers. It's a bit like Microsoft Online Crash Analysis for the Tcl language but with consise wording. By Peter Caffin. |
Above are some open source projects by people within the business.