Behind the Email
FreemiumWeb app / API
Looks up an email address and returns a public identity profile with name, work history, education, linked accounts, and breach exposure.
OSINT Gems
OSINT tools picked for the time they save. Paid is fine when the result is worth it. Search by category, format, price, or setup.
Gem Gem 
HackCheck
FreemiumWeb app / API
Searches billions of breach records by email, username, password, or other identifiers and shows which leaks contain the query.
Gem 
IntelBase
FreemiumWeb app / API
Turns an email into a digital footprint: registered accounts, profile details, breach hits, and infostealer-log exposure, with a timeline of activity.
Gem 
Revealer.US
FreemiumWeb app / API
Looks up an email, username, or phone across hundreds of live platforms and known breach datasets, then cites the source on every match.
Gem 
Fingerprint.to
FreemiumWeb app
Searches a username, email, or phone across 700+ public platforms and streams matching profiles as they come in.
Have I Been Pwned
FreemiumWeb app / API
Checks whether an email address or phone number appears in known data breaches and lists which breaches exposed it.
Wayback Machine
FreeWeb app / API
Browse saved snapshots of a web page over time, or save a new snapshot of a page that is live now.
Shodan
FreemiumWeb app / API
Search engine for internet-connected devices that shows the open ports, running services, and banners for a host or IP.
Sherlock
FreeCLI
Command-line tool that checks a username against hundreds of social networks and reports where an account with that name exists.
PimEyes
FreemiumWeb app
Face search engine that finds other public photos of the same person across the web.
archive.today
FreeWeb app
Saves a frozen snapshot of a web page that stays available even after the original changes or goes offline.
Epieos
FreemiumWeb app
Looks up an email address or phone number and shows the linked accounts and public profile details it can find.
Maltego
PaidDesktop app
Desktop app for link analysis that maps connections between people, domains, emails, and other entities on a graph.
Intelligence X
FreemiumWeb app / API
Search engine for leaked data, the dark web, and historical pages, with results kept in a long-term archive.
SpiderFoot
FreeCLI / Web app
Automates OSINT collection across 200+ data sources and links the results for a target such as a domain, IP, email, or name.
PhoneInfoga
FreeCLI
Command-line framework that checks an international phone number and gathers its country, carrier, line type, and online footprint.
FaceCheck.ID
FreemiumWeb app
Face search engine that matches a photo of a person against images found across the web.
Google Hacking Database
FreeDataset / Guide or reference
Catalog of Google search queries, known as dorks, that surface exposed files, devices, and sensitive pages.
Holehe
FreeCLI
Command-line tool that checks whether an email is registered on 120+ sites using their signup and forgotten-password flows.
OSINT Industries
PaidWeb app / API
Takes an email, phone number, username, name, or crypto wallet and returns linked accounts and profile data from a large set of online services.
Truecaller
FreemiumWeb app / Mobile app
Reverse phone lookup and caller ID that returns the name and spam reputation reported for a number.
GHunt
FreeCLI
Command-line tool that investigates a Google account from an email and returns the profile, public reviews, and linked services it can read.
Blackbird
FreeCLI
Command-line tool that searches a username or email across 600+ sites and can export the matched accounts to PDF or CSV.
Jimpl
FreeWeb app
Reads the hidden EXIF metadata in a photo, such as location, date, and camera details, and can remove it before you share the file.
UserSearch
FreemiumWeb app
Searches a username, email, phone number, or photo across thousands of social networks, forums, and dating sites.
LoL-Archiver OSINT
FreemiumWeb app
Runs reverse email, phone, username, and name lookups across 500+ networks and returns the linked accounts it finds.
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