tkWWW is written in the tk scripting language. This language is very versitile. Here are some demonstrations of scripts using the tk language. These applications are started using the tkWWW "exec" tag.
bowl
This is a bowling game
xf
xf is a WYWSIWYG application builder using the tk language. It contains online help as well as a tutorial creating a sample tk application.
periodic
This is a periodic table written in tk.
widgets
This is a demo of tkWWW widgets.
browser
This application allows remote commands to tk.
calc.tk
This is a simple calculator
coloredit.tk
A coloreditor
tcolor
Another color editor
ixset
A nice interface to ixset
sim-bernoulli
A very primitive interface to the bernoulli process simulator
wtour
A tour of the tk widgets