Transportation
Book Tours On-Line check the price and availability of tours all over the world and book on-line.

Auto Europe  offers discount car rental services, discount airfare, and discount hotel reservations.
 

BusAbout The Budget Backpacker Travel Network for Europe Create your own itinerary, plan your own adventure! Busabout's Hostel to Hostel Backpacker Bus is exclusively for Independent Travelers - ideal if you are traveling alone.

Train Passes allow you to travel quickly and conveniently throughout Europe.   If you are only visiting central Europe, consider a German Benelux Pass (covers Germany, Belgium, the Netherlands, and Luxembourg) or a France Benelux Pass (covers France, Belgium, the Netherlands, and Luxembourg) .
 

MotoEuropa/IdeaMerge On-line guide to traveling Europe by car, with specific country and road information.   Includes bulletin boards, ride-share information and more. Great rental deals for those traveling 17 days or more.

Eurolines Offers point-to-point tickets as well as the Eurolines Pass. The pass will take you to 33 of Europe's finest cities, allowing you to enjoy travel around the continent for up to 15, 30 or 60 days. You can explore Europe at your own pace, traveling when you like and staying over for as long as you like, all for one bargain fare.