The BWidget Toolkit is a high-level Widget Set for Tcl/Tk built using
native Tcl/Tk 8.x namespaces. The BWidgets have a professional look
and feel as in other well known Toolkits (Tix or Incr Widgets), but
the concept is radically different because everything is pure Tcl/Tk.
No platform dependencies, and no compiling required. The code is 100%
Pure Tcl/Tk.

The BWidget library was originally developed by UNIFIX Online, and
released under both the GNU Public License and the Tcl
license. BWidget is now maintained as a community project, hosted
by Sourceforge. Scores of fixes and enhancements have been added by
community developers.