[Name] - Subfinder
[Homepage] - https://projectdiscovery.io/open-source
[Download] - https://github.com/projectdiscovery/subfinder/releases
[Version] - 2.3.5
[Author] - ProjectDiscovery
[License] - MIT
[Dependencies] - GoLang
[Description] - Subfinder is a subdomain discovery tool that discovers valid subdomains for websites. Designed as a passive framework to be useful for bug bounties and safe for penetration testing

subfinder is a subdomain discovery tool that discovers valid subdomains for websites by using passive online sources. It has a simple modular architecture and is optimized for speed. subfinder is built for doing one thing only - passive subdomain enumeration, and it does that very well.

We have designed subfinder to comply with all passive sources licenses, and usage restrictions, as well as maintained a consistently passive model to make it useful to both penetration testers and bug bounty hunters alike.