Subfinder is described as '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' and is an app in the security & privacy category. There are five alternatives to Subfinder for Web-based, Self-Hosted and Linux. The best Subfinder alternative is OWASP Amass, which is both free and Open Source. Other great apps like Subfinder are Sublist3r, SubdomainRadar, Anubis Subdomain enumeration and Lepus Subdomain finder.
The OWASP Amass Project has developed a tool to help information security professionals perform network mapping of attack surfaces and perform external asset discovery using open source information gathering and active reconnaissance techniques.
Discover hidden subdomains with unparalleled speed and precision. SubDomainRadar.io is the ultimate subdomain finder and lookup tool for cybersecurity professionals, bug hunters, and pentesters, offering advanced enumeration through exclusive data sources and real-time search capabilities.
Anubis is a subdomain enumeration and information gathering tool. Anubis collates data from a variety of sources, including HackerTarget, DNSDumpster, x509 certs, VirusTotal, Google, Pkey, and NetCraft.
Lepus is a utility for identifying and collecting subdomains for a given domain. Subdomain discovery is a crucial part during the reconnaissance phase.
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