The top carpooling a rideshare services and websites depend on where you live.

A “top” ridesharing and carpooling service really depends on which country you’re looking into as not all rideshare companies exist across the world. Also, not every rideshare service may have enough critical mass to be viable enough to assist you with your carpooling/ridesharing needs. And last, but not least, it’s very important that you find drivers or passengers that you trust and are comfortable driving with – Jason Yun

 

A breakdown by country.

USA: ZimRide,
Europe: BlaBlaCar.com
New Zealand www.jayride.co.nz
Germany: mitfahrgelegenheit.de, mitfahrzentale.de
France: covoiturage.fr
World: Outpost.travel joinntravel.com |
Brazil: Zazcar – Seu carro por hora – Para Você
India: Cabshare- Bangalore, Mumbai, Pune, Delhi, Rideshare Let’s Ride, Pune (carpooladda), www.carEgiri.com

http://www.quora.com/Ride-Sharing/What-are-the-top-carpooling-ridesharing-websites