(*Grumble, grumble* It's "alternative" or "extra", not "alternate". The latter means something like a seesaw. --KL) (Webster says that alternate means constituting an alternative (took the alternate route home. Besides, the seesaw definition fits - as one teeter totters back and forth between Tk and these additional extensions).

Purpose: document such Tk "widget sets" as the following. Please feel free to add more info, create specialty pages containing additional details, etc. point to reference material or images of the widgets, mention the platforms, etc.

See Alternative GUI toolkits for something different.

• BLT is a C based widget library adding visualization and other helpful Tk widgets. See http://www.tcltk.com/blt/ for more details.
• BWidgets is a Tcl/Tk based widget library that is stored as a separate module of http://tcllib.sf.net/.
• efftcl includes a number of useful Tk widgets. See [add url] for more details.
• The eWidgets Toolkit will be a new collection of extended widgets and dialogs for Tcl/Tk.
• Donal Fellows has a variety of useful Tcl and Tk scripts at http://www.cs.man.ac.uk/%7Efellowsd/tcl/ , including a percent progress bar, etc.
• Iwidgets is a C based megawidget framework based on [incr Tcl] for combining Tk widgets into more useful forms. [incr Widgets] is a collection of such useful widgets. See http://incrtcl.sf.net/ for more details.
• Img is a C based Tk library that adds to Tk a variety of new image formats that can be manipulated. See http://www.purl.org/net/nijtmans/img.html for more details.
• mkWidgets is a Tk metawidget support library, containing a variety of useful widgets. You can find it at http://mkextensions.sf.net/ .
• Pie Menus http://art.net/Studios/Hackers/Hopkins/Don/piemenus/
• PLPLOT [1] includes a Tk plotting widget.
• POOL http://www.purl.org/NET/akupries/soft/pool/ is a personal library of routines, including caledar widgets, megawidgets, etc. (code useful for either GUI or just Tcl programming).
• scwoop is a script based Tk megawidget structure built on stooop. More details can be found at http://jfontain.free.fr/scwoop.htm .
• While Thin appears to exist mostly to support BrowseX, there's no structural or licensing reason not to use it by itself.
• Tix is a C based widget library which is based on the Tk code, providing a variety of new widgets . See http://tix.sf.net/ for more details.
• tkpiechart , a part of the packages available at http://jfontain.free.fr/
• vu ( a version of which is available as part of the code found at http://www.purl.org/net/hobbs/tcl/capp/ )
• Jeff Hobb's megawidget code can be found at http://www.purl.org/net/hobbs/tcl/script/widget/ .
• Gnocl providing Tcl bindings for the Gtk+ widget set. http://www.gnocl.org/
• TclMacBag by Peter Caffin aims to provide modern Mac widgets and good Tile based fallbacks for other platforms: http://tclmacbag.autons.net/

Also see Part 5 of the comp.lang.tcl software catalog at [2].

RLH : Those all seem to have something to do with Tk in one form or another. Gnocl does not. It is a binding for GTk+ and Gnome. It is awesome alternative to Tk and IMHO should be heartily embraced by the Tcl community.

WJG Especially now that the core Gnocl widget set is available on Windows and MacOSx too!

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