Castrick is described as 'An #OSINT platform to discover valuable insights about anyone through reverse email, username, and phone number lookups, leaving no trace behind' and is an website in the security & privacy category. There are seven alternatives to Castrick, not only websites but also apps for a variety of platforms, including Mac, Windows, Linux and SaaS apps. The best Castrick alternative is Sherlock, which is both free and Open Source. Other great sites and apps similar to Castrick are Noimosiny, Epieos, Naminter and Osintly.
Castrick alternatives are mainly Data Breach Tools, but if you're looking for
Privacy Tools or Web Search Engines you can filter on that. These are just examples - use the filter bar below to find more specific alternatives to Castrick.