Working a lot right now on the Tix Integrated Development Environment: http://starship.python.net/crew/mike/ which includes IDEStudio SpecTix TixXf and TixClips,
Tide is built on the Tixapps framework http://tix.sourceforge.net/Tixapps/ which is a library and suite of programs, including Tixinspect and TixDebug, which work as either Tcl or Tkinter applications.