Diesel Laptops appears to be a legitimate company that specializes in diesel software and hardware diagnostic tools for commercial trucks, diesel automobiles, construction vehicles, agriculture equipment, marine vehicles, and other diesel engine machinery. They provide live data, fault codes, troubleshooting, repair information, DTC solutions, and more. Their products are available on various platforms including their own website and Amazon. However, there are mixed reviews about their products online. Some customers have given them high ratings while others have raised concerns about the legitimacy of the software they provide. It's always recommended to do thorough research and consider multiple sources before making a purchase.