GameFAQs - Includes a PC version walkthrough, game information, hints and codes, as well as saved games and forum. - http://www.gamefaqs.com/console/psx/data/198118.html
GameSpot - [8.9/10] Reviewed by: Greg Kasavin. "...chances are you'll feel no need to drive anything else for a long time." Includes screenshots, hints, downloads, and reader reviews.(PC) - http://www.gamespot.com/pc/driving/needforspeedporscheu/
Erix's Porsches - Includes cars for the PC version, a step-by-step tutorial on creating cars, tools for edting cars as well as links. - http://erix.nfsunlimited.net/main.html
NFS-Planet.de - Downloads include add-on cars, tracks, as well as wallpaper and preview movies. Also codes, hints and editing tools. - http://www.nfs-planet.de
Westside Porsche Unleashed Project - Includes links, forum and screenshots. Downloads include cars, tracks, and utilities. - http://westside.waveracer.net
ND4SPDWorld - Site includes updates for the PC versions, cars and tracks. Also reviews and FAQ. - http://www.nd4spdworld.com
Neoseeker: Need For Speed 5 - Includes hints, reviews, downloads, and links, as well as a forum. - http://www.neoseeker.com/Games/Products/PC/nfs5/