In their own words:

Libro makes the online reservation process easier for restaurant owners and diners. The Libro online reservation system lets diners make reservations from your website, your Facebook page as well as from our well established affiliates network. We’ll help grow your business through our network; we are a large online restaurant marketplace, powering over 12,000 restaurants and driving over 10 millions visits each year. You can use the Libro Dashboard on any web platform: from your phone to your tablet or portable computer.