Zimride by Enterprise Holdings is an American carpool program that matches inter-city drivers and passengers through social networking services. It is offered to universities and businesses as a matchmaking service. The company was founded in May 2007. After the launch of the Lyft app in May 2012 for intra-city rides, the Lyft app rapidly grew and became the focus of the company. Zimride officially renamed as Lyft in May 2013, and the Zimride service was sold to Enterprise Holdings in July 2013. As of July 2013, the service had over 350,000 users and has partnerships with Facebook and Zipcar.