real estate website apps. tools

We're developing a new 2.0 real estate website and are seeking applications, content, scripts and the latest 2.0 services available for real estate applications that we can easily? implement into our system. Example #1: Buy A Home - Sell A Home pages properly scripted in a compelling format for PHP programming. Example #2: The proper copy/text in a professionally written format that compels end-users to trust and use our service. Example #3:? A request for any new applications relating to but separate from, Zillow and Trulia-which are exceptional systems however, we cannot script these for personal use. Request general real estate content for SEO purposes and generic non-branded real estate related videos that can be used royalty-free, or purchased and branded to our Company.