Click the icon to visit the website:
(Note: none of these sites or companies sponsors me or pay for this spot. I just recommend them because I have used them and they have been helpful).
Hitchwiki (collaborative website about hitchhiking and other forms of cheap transportation).
Carpooling (super useful if you are traveling around Europe. For a small fee, you can travel by car with a person who goes on your same direction. Connects 40 countries and has regional pages for Germany, Austria, Switzerland, Spain, Italy, France, United Kingdom, Greece and Poland).
Couchsurfing (the group I go here … do you need a lift? offers an online board with spaces in private cars. Depends on your luck finding something that fits your requirements, but it is there. You must open an account and join the Couchsurfing group , of course).