City CarShare - http://www.citycarshare.org - Operating throughout San Francisco, City Car Share allows one to drive a car, for a registration fee and some operating fees, without the hassles of ownership.
Market Street Railway
- http://www.streetcar.org/
- Non-profit organization dedicated to the restoration and maintenance of historic transit vehicles in San Francisco. Activities, online museum, information and links.
San Francisco Municipal Railway
- http://www.sfmuni.com/
- Muni provides public transportation within the City and County of San Francisco, California. Its buses, electric trolleys, streetcars and cable cars transport nearly 700,000 passengers a day.