Journalists verify sources and fact-check claims by finding corroborating information from public records and news archives.
Founders conduct competitive research on rival companies using domain lookups, social media tracking, and public business records.
Security professionals monitor threats by tracking accounts, analyzing data breaches, and investigating suspicious activity across platforms.
Anyone perform due diligence on people or organizations before hiring, partnering, or investing by aggregating public information.
This is a massive, community-maintained directory of tools and resources for OSINT, which stands for Open-Source Intelligence, meaning the practice of gathering information from publicly available sources. Think of it as a comprehensive cheat sheet for anyone who needs to research people, companies, websites, or events using only free, public information on the internet. The list is useful for a wide range of people: journalists verifying sources, founders doing competitive research, security professionals tracking threats, or anyone who needs to find out more about someone or something online. You don't need to write any code to use most of what's here, it's a curated collection of websites, search tools, and techniques. The directory covers an enormous range of topics: specialized search engines, ways to look up who owns a website or phone number, tools for tracking social media accounts, image analysis tools that can reverse-search photos, mapping and geolocation resources, data breach lookup sites, and even tools for monitoring the dark web. There are sections dedicated to specific platforms like Twitter, LinkedIn, Instagram, and Reddit, as well as resources for academic research, news verification, and fact-checking. For founders and PMs, the company research and domain investigation sections alone can save hours of manual Googling. For anyone building tools in the security or trust-and-safety space, this is a go-to reference. It's a living document with over 26,000 GitHub stars, meaning a large community keeps it updated with new tools as they emerge.
Generated 2026-05-18 · Model: sonnet-4-6 · Verify against the repo before relying on details.