AllData
ALLDATA is the leading provider of electronic diagnostic and repair information and services for the automotive service industry. ALLDATA offers comprehensive automotive information, shop management and marketing tools to help boost shop performance.

International Automotive Technician’s Network (iATN)
This is a large and active site that is driven by technician supplied information. It has many features such as discussion forums, TechHelp email, and a large database of fixes. One of the discussion forums is dedicated to automotive education.

Identifix
Since it’s founding in 1987, Automotive Information Systems (AIS), Inc. has evolved into the nation’s best source for knowledge on what breaks, which vehicles it breaks on, and how to fix those vehicles correctly.

Mitchell Repair
Mitchell On Demand iS a service information system used by repair professionals in independent repair and body shops, service stations, automobile dealerships, and educational institutions.

National Automotive Service Task Force (NASTF)
The National Automotive Service Task Force is a cooperative effort among the automotive service industry, the equipment and tool industry, and automotive manufacturers to ensure that automotive service professionals have the information, training, and tools needed to properly diagnose and repair today’s high tech vehicles.