Again these are not terribly well maintained
NEW! See current and historic London house prices overlaid on a Google map of London, hotter the colour the higher the price.
It easier to try it out than it is to describe it!
This is updated every month with new house prices from Oodle
Can you write a fractal generator in javascript?
Yes you can and here it is, although it's never going to be as a good as a desktop application it shows what can be done.
This makes use of Google's Explorer Canvas to allow Internet Explorer users the joy of the canvas tag. It still works best in Firefox or Opera though.