This document lists various mobile apps and companies related to location-based services and advertising. It mentions location-based ad networks like AdLocal and companies that have been acquired like Loopt that helped pioneer location-aware mobile advertising. It also lists popular location-based social apps from the past like Foursquare, Gowalla and Burbn as well as current platforms and how some have partnered with companies like Groupon to offer local deals. Finally, it mentions examples of location-based app categories and companies in India like MapMyIndia, Navfree and MojoStreet.