» Air Service Berlin CFH GmbH    Details regarding several siteseeing flights, helicopter and balloon rides and parachute jumps in and around Berlin. Also contains videos of the various services.    http://www.air-service-berlin.de/

» BVG    Public transport guide for travel in Berlin and Brandenburg. Passenger information, ticket details, history, and contact information.    http://www.bvg.de/

» Minex    Provides information and pricing regarding rental and chauffeurs service for limousines, cars, coaches and minibuses.    http://www.minex.de/

» Public Traffic and Transportation in Berlin    With maps and schedules for S-Bahn, U-Bahn, Strassenbahn, trains and buses for the city, flight departures and arrivals at all airports.    http://www.berliner-verkehr.de/

» S-Bahn Berlin GmbH    Public transport in Berlin. Information on the company, trains, fares, and a picture gallery.    http://www.s-bahn-berlin.de/