Most prominent Tkinter applications?

[Kevin Walzer]

I'm looking for examples of "best practices" in Tkinter/Python
programming. What are the most prominent Python applications out there
that use Tkinter as the GUI toolkit? These can be commercial or
open-source, but are preferably multi-platform.

I know IDLE is written in Tkinter, so that's one example. Can anyone
direct me to others?

-- 
Cheers,

Kevin Walzer, PhD
WordTech Software - "Tame the Terminal"
http://www.wordtech-software.com
sw at wordtech-software.com