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osint.dev
A curated technical platform for OSINT research.
A curated catalog of OSINT tools, documentation and sources, organised by a clear taxonomy and built for technical research.
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Start with one target and follow the connections as they appear.
investigate
Research from one starting point.
Use a domain, hostname, public IP, ASN or company to begin, then follow only the connections supported by the results you find.
Verify
Keep source context close to each result, so it is easier to distinguish what was observed from what still needs checking.
Follow connections
Move from domains to hosts, IPs, ASNs, certificates and organisations when the available evidence supports the link.
recommended
Start here.
A small selection of useful tools and reading from across OSINT.dev.
Tools
- Security Headers CheckerSecurity Headers Check
Inspect HTTP security headers on any public URL.
- DNS / MX / SPF / DMARC InspectorSPF / DKIM / DMARC
Resolve DNS, mail-routing and email-authentication posture for a domain, including deep SPF/DMARC analysis.
- Robots.txt + Sitemap + Meta AnalyzerRobots & Sitemap
Inspect robots.txt, sitemap discovery and head meta of a page.
Reading
- Stop Calling Them Hackersfeatured
Calling every cyber actor a hacker collapses authorization, motive and attribution into one vague label. Better OSINT starts with language precise enough to preserve what the evidence actually says.
- OSINT Is Not Just Searchingfeatured
Search finds public information. OSINT begins when that information is resolved, verified, contextualized, corroborated and turned into a traceable answer to a defined question.
- The Problem With Tool-Centric OSINT Educationfeatured
Tool lists are useful, but training people around interfaces creates dependency. Durable OSINT education should teach questions, signal meaning, source criticism, limitations, evidence states and judgment — with tools inside the method.
perspectives
Analysis and ideas around open-source research.
Methods, judgment, ethics and the questions that sit behind the tools.
Terminology
Stop Calling Them Hackers
Calling every cyber actor a hacker collapses authorization, motive and attribution into one vague label. Better OSINT starts with language precise enough to preserve what the evidence actually says.
ReadMindsetOSINT Is Not Just Searching
Search finds public information. OSINT begins when that information is resolved, verified, contextualized, corroborated and turned into a traceable answer to a defined question.
ReadCultureThe Problem With Tool-Centric OSINT Education
Tool lists are useful, but training people around interfaces creates dependency. Durable OSINT education should teach questions, signal meaning, source criticism, limitations, evidence states and judgment — with tools inside the method.
Readbrowse by topic
A clear way through the catalog.
Tools and references are grouped by topic so you can find a useful starting point without working through an unstructured list.
Domain & Web
4 categoriesDomini, HTTP, struttura web
Email & Deliverability
3 categoriesEmail e deliverability
Security & Headers
3 categoriesHeader e sicurezza web
Metadata & Discovery
3 categoriesMetadati e discovery
Reputation & Risk
3 categoriesRischio ed esposizione
Infrastructure & DNS
4 categoriesDNS e infrastruttura
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