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Sherlock

Username enumeration across 400+ sites

Overview

A Python CLI that hits hundreds of social platforms with a candidate username and infers existence from HTTP status codes and response text. It is fast, dependency-light, and the standard first move in a username pivot.

Field Note

Expect false positives on sites that return HTTP 200 for a "user not found" page instead of a proper 404 — Sherlock flags these as hits unless the detection string is well maintained. Always open a handful of top results manually before you trust the list; treat the output as a shortlist, not a verdict.
Best for
A fast first pass when you only have a handle and need to know where to look next.
Pricing
Free & open source (MIT)
Last updated
August 17, 2026