AlterNetRides
   Free service nationwide that matches up commuters. Includes links to other resources.
   http://AlterNetRides.com

CarPoolWorld
   Matches commuters based on proximity to home and work. Worldwide.
   http://www.carpoolworld.com/

CarSharing Network
   A program where members have access to a local fleet of vehicles, but do not own the individual vehicles. Links to European and North American cities with car sharing programs, and related resources.
   http://www.carsharing.net/

Carpool Crew
   Includes search by radio station and interests to match up commuters with similar interests.
   http://www.carpoolcrew.com/

Carpoolconnect.com
   A commuters search engine. Enter a zip or postal code and find commuters in your area searching for you to share a ride.
   http://www.carpoolconnect.com

Compartir
   Carpooling via a geographic search engine. Enter your requirements.
   http://www.compartir.org/

Drive2Day
   Cost free carpooling service which offers carpools world wide. Search for drivers or passengers.
   http://www.drive2day.com/

Freewheelers
   Lift sharing database connects drivers and passengers to share the cost of travel to work, festivals, gigs and sporting events.
   http://www.freewheelers.co.uk

GishiGo
   Matches travelers for one-time trips.
   http://www.gishigo.com/

Lift Share
   The online journey matching service that finds you travelling companions.
   http://www.liftshare.org/

Ridester
   Feedback-rated system for one-time travel.
   http://www.ridester.com/

eRideShare
   Ride sharing and carpool board. Travel and commuting databases arranged by country and state.
   http://www.erideshare.com/