Lyft

Lyft is a taxi service which is publicly traded and based in San Francisco, California, USA. Lyft allows users to find, through a website or mobile app, drivers who are partnering with the service and are ready to give them a ride for a reasonable fee. Lyft's motto is “your friend with a car”. According to the company, their service allows its clients to travel by Lyft at a cost 30% lower than using traditional taxis.
The service operates in 644 cities in the United States and 12 cities in Canada.
Lyft started in the summer of 2012.