ShackPrices, a Washington State real estate broker and a member of the Northwest Multiple Listing Service (NWMLS) is a Seattle based real estate Ajax application written using Rails. The company was founded by Galen Ward and Doug Cole in 2006. If you do real estate, you need to mashup to Google Maps, but this goes beyond that. It is highly interactive, with lots of live filters and tools, and the back button seems to be handled really well.
ShackPrices, Real Estate, Company, AJAX, Ruby on Rails