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Open-source intelligence

The right OSINT tool for every question

A curated directory of open-source intelligence tools, paired with practical guides — so you spend less time hunting for tools and more time investigating.

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3.4k+

OSINT tools

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18

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13

Blog posts

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4

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Categories

Explore tools by what you're investigating

Every category maps to a real question — pick the artifact in your hand.

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How-to

Popular OSINT methods

Step-by-step playbooks for the OSINT techniques that matter most — each one practical enough to follow today.

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Intermediateschedule~40 min

How to Geolocate a Photo From Visual Clues

A step-by-step method for pinning down exactly where a photo was taken — even with no metadata — by reading the image and matching it against satellite and street-level imagery.

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Beginnerschedule~20 min

How to Verify a Photo With Reverse Image Search

A practical workflow for checking whether an image is genuine, when it first appeared, and whether it really shows what it claims — before you trust or share it.

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Beginnerschedule~25 min

How to Find Every Account Linked to a Username

A method for taking a single handle and mapping the full set of accounts tied to it across platforms — the foundation of people-focused investigations.

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Beginnerschedule~20 min

How to Investigate an Email Address

A workflow for turning an email address into intelligence: breach exposure, the services it's registered with, and the accounts and identity behind it.

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Intermediateschedule~45 min

How to Map a Domain's Infrastructure

A reconnaissance method for enumerating a domain's subdomains, DNS records, certificates, and related assets to reveal an organisation's full online footprint.

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Beginnerschedule~30 min

How to Set Up a Safe OSINT Research Environment

A setup method for investigating cleanly and safely — a compartmentalised browser, research accounts, and the OPSEC habits that protect both you and your findings.

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Find your tools

Find the right method for your task

Answer three quick questions and get a tailored shortlist of OSINT methods and tools.

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Reference

OSINT glossary

Plain-language definitions of the terms, techniques and acronyms you'll meet across the field.

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Frequently asked questions

What is OSINT?add

OSINT stands for open-source intelligence: collecting and analyzing information that is publicly available, from social media and websites to public records and satellite imagery.

Is using these tools legal?add

Accessing publicly available information is generally legal, but the details depend on your jurisdiction and how you use it. Never bypass access controls or violate a site's terms of service, and respect people's privacy. See our disclaimer for more.

Are the listed tools free?add

Many are completely free and open source. Others are freemium, offering a useful free tier with paid upgrades. Each listing shows a pricing badge so you know what to expect.

Do I need an account to use OSINT Guide?add

No. Browsing the directory and reading the guides is open to everyone. An account is only needed for optional saved features.