SearchPOF.com is an online tool that helps users work with usernames, digital identities, or related information for research and testing.
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A page for checking Canadian social insurance numbers, verifying the first digit and Luhn check digit, showing the step-by-step check, and offering sample SINs for testing forms. It also lists what the first digit means and includes PHP and JavaScript check code.
social-analyzer is an online tool that helps users work with usernames, digital identities, or related information for research and testing.
A page from the Fake Name Generator that checks whether a US Social Security number follows Social Security Administration numbering rules. It explains how SSNs are built and how numbering changed in 2011, and provides sample SSNs for testing forms. The page notes that numbers following the rules may still never have been issued.
The Hitchhiker's Guide to Online Anonymity is a guide covering tracking techniques, ID verification, anonymous identity creation and operational security. It can be read online, downloaded as PDF or ODT, or accessed through a Tor mirror.
Towson University is a public university located in Towson, Maryland, a suburb of Baltimore. It operates a 329-acre campus and offers undergraduate, graduate, and international admission programs, including more than 80 graduate-level programs. The university fields 19 NCAA Division I athletic teams. A 2025 outcome report found 90% of graduates were employed or enrolled in graduate school, with an average full-time starting salary of $60,952. The university lists over 250 student identity organizations and 6,276 annual internships.
The Tree Proof Generator is a web tool that accepts formulas of standard propositional, predicate or modal logic and tries to find either a countermodel or a tree proof, also called a semantic tableau. It supports classical propositional logic, first-order predicate logic with functions and identity, and a few normal modal logics.
unDraw presents a collection of open-source illustrations that users can browse and download, with on-the-fly color image generation to match a brand identity. A separate style is offered on unDraw Plus for supporters.
An OSINT tool for investigating usernames online. It presents a custom search form that redirects to search engines and websites of external parties. The page notes that usernames can contain real information and that unique usernames are more likely to indicate the same person across accounts.
Creates sample Washington driver license data for mockups, testing, and development examples.
OSINT tool for checking whether usernames or identities appear across Instagram and online services.