MagicBus - Dynamic ride matching and booking for vanpools, shuttles, and other shared transportation
uberCOMMUTE - Carpooling at the press of a button
WishBeen - Browse thousands of route-by-route travel plans
Uber - Uber is a website and mobile app that allows you to get a ride similar to a taxi service from your phone.
Scoop - A command-line installer for Windows
Ride - Hassle-free ridesharing app with your coworkers