Boo-box API

From their site: Use this public API and use our wonderful product recommendation services to make your own recommendation application. Advantages: we give better results; you can use boo-box API to do a search even on an e-commerce that does not have a public API; we have a powerful cache system, which makes searches quicker; you can show boo-box's recommendation with whichever look you like; it will return a very slim XML code, quicker to load and read.