sherlock

Find usernames across social networks

Platforms: Linux · Last verified September 6, 2026

Sherlock relies on the site’s designers providing a unique URL for a registered username. To determine if a username is available, Sherlock queries that URL, and uses to response to understand if there is a claimed username already there.

Only use this tool against systems you own or are explicitly authorized to test — see the disclaimer.

Getting started

See the official Kali tool page and upstream homepage linked above for installation and usage details.

Commonly preinstalled on

Kali Linux

Debian-based distribution built for penetration testing and security auditing