Chrome SEO extension needed

I need a chrome SEO extension like the one you can find here: [login to view URL] 1. It must have all of the functionalities you can find in the one I mentioned. 2. I need it to have own JS files. I mean you can be inspired by code of "pagerank status" extension but you cant simply copy the code. You have to create your own libraries and functions that will mimic the functionality! These JS functions must be reusable for future chrome extensions. 3. Nice design is needed. It will have tabs at left and separated sections for all categories (SEO Info, Domain Info, Document Info ... ) 4. Experienced chrome developers only please.