Description: Gowalla was a location-based social networking website and mobile app launched in 2007. It allowed users to check-in at various locations and connect with friends to share places they have visited. The service shut down in 2012 after being acquired by Facebook.
Type: software
Description: Yelp is a website and mobile app that provides crowdsourced reviews about local businesses. Users can read and write reviews, rate their experience, and search for restaurants, shops, services, and other businesses in their area.
Type: software