Subdomain Discovery Tools
Internet-Wide Scanning
OSINT and Information Gathering
Specialized Tools
Cloud Enumeration Tools
CloudEnum
Beginner to Intermediate
Actively maintained
Multi-cloud asset enumeration for AWS, Azure, and GCP
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Scout Suite
Intermediate to Advanced
Actively maintained
Multi-cloud security auditing and misconfiguration detection
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Pacu
Advanced
Actively maintained
AWS exploitation framework for penetration testing
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HTTP Probing and Fingerprinting
DNS, Ports, and Network Mapping
dnsx
Beginner
Actively maintained
Fast DNS resolution, record lookup, and wildcard-aware brute forcing
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naabu
Intermediate
Actively maintained
Fast SYN/CONNECT port scanning built for pipelines
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asnmap
Intermediate
Actively maintained
Map an organization to the IP ranges it actually owns via ASN lookup
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Crawling and Content Discovery
katana
Intermediate
Actively maintained
Crawl web applications to map endpoints, parameters, and JavaScript-referenced routes
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gau (GetAllUrls)
Beginner
Actively maintained
Pull historically-known URLs for a domain from public archives
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ffuf
Intermediate
Actively maintained
High-speed fuzzing for content discovery, parameters, and virtual hosts
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Vulnerability Scanning
Secret and Credential Discovery
Frameworks and Orchestration
BBOT
Advanced
Actively maintained
Recursive OSINT and attack-surface framework that chains many modules automatically
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uncover
Beginner
Actively maintained
Query Shodan, Censys, FOFA, and other engines from one command line
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notify
Beginner
Actively maintained
Pipe tool output to Slack, Discord, Telegram, or a webhook
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