NFSCars - Offers forums, cheats, and cars for download for Need for Speed 3, 4, 5, and 6. - http://www.nfscars.net
NFSHome - Features cheats, cars, tracks, and utilities for download for the whole series. - http://www.nfshome.com/
NFS HS Mixer - Provides a track mixing tool and a variety of NFS tracks for download. - http://www.8ung.at/jimdiabolo/
Need For Better Speed - Features tips, cheats, and tweaks. - http://needforbetterspeed.com
Need For Speed Cars - Download cars for Need For Speed: High Stakes. Includes cars for NFS3 and NFS5, pictures, guestbook, patches, editors, downloads and links. - http://www.nfscars.com/
Alex's City - Offers a deep look into the simulated worlds of Need for Speed II and III. - http://alexscity.50megs.com/