The best Privacy Tool alternative to BuiltWith is Blacklight Privacy Inspector, which is both free and Open Source. If that doesn't work for you, our users have ranked more than 25 alternatives to BuiltWith, but unfortunately only one of them is a Privacy Tool.
BuiltWith alternatives are mainly Privacy Tools, but if you're looking for
Website Audit Tools you can filter on that. Other popular filters include
Open Source. These are just examples - use the filter bar below to find more specific alternatives to BuiltWith.