Nuclei is used to send requests across targets based on a template,
leading to zero false positives and providing fast scanning on a large
number of hosts. Nuclei offers scanning for a variety of protocols,
including TCP, DNS, HTTP, SSL, File, Whois, Websocket, Headless etc.
With powerful and flexible templating, Nuclei can be used to model all
kinds of security checks.

Homepage:
https://nuclei.projectdiscovery.io/
