Best Free OSINT Tools of 2026 - Reviews & Comparison

Compare the Top Free OSINT Tools as of October 2026

Sort By:

OSINT Free Version Clear Filters

What are Free OSINT Tools?

OSINT (Open-Source Intelligence) tools help cybersecurity professionals, investigators, law enforcement agencies, researchers, and businesses collect, analyze, and interpret publicly available information from online and offline sources. These tools aggregate data from websites, search engines, social media platforms, public records, domain registries, news sources, and other open sources to uncover relationships, identify threats, investigate entities, and generate actionable intelligence. OSINT tools often include capabilities such as automated data collection, web scraping, social media monitoring, domain and IP analysis, geolocation analysis, entity resolution, link analysis, dark web monitoring, and threat intelligence visualization. Many OSINT solutions integrate with security information and event management (SIEM) systems, threat intelligence platforms, investigation management software, and cybersecurity tools to support digital investigations, risk assessments, fraud detection, and security operations. By transforming publicly accessible information into structured intelligence, OSINT tools help organizations identify potential threats, conduct due diligence, investigate suspicious activities, and make more informed security and business decisions. Compare and read user reviews of the best Free OSINT tools currently available using the table below. This list is updated regularly.

1

Ipregistry

Ipregistry

Understand your audience and act upon—locate visitors by IP address, enrich forms, target mobile users, detect and prevent online fraud, analyze logs, or perform geo IP based redirections. Ipregistry is a trusted and in-depth IP Geolocation and Threat detections source of information that can benefit publishers, ad networks, retailers, financial services, e-commerce stores and more. Our products produce insights that can be used to personalize content for users, customers or leads in a non-intrusive manner, based on their currency, location, time zone, company or carrier details. These insights can also be leveraged to deliver targeted advertising, control the distribution of digital media but also prevent online fraud by detecting malicious activities: requests from hosting nodes, users using Tor, public proxies or users reported as abusers and attackers in 220+ OSINT threat feeds.

Starting Price: $1.8 per 14.409 lookups

View Tool
2

XposedOrNot

XposedOrNot

XposedOrNot is a web-based data-breach lookup and monitoring service for individuals, domain owners, and security teams. Users can search an email address to see the public breaches associated with it, including breach dates and exposed data types, and review breach records in a searchable catalog. Optional alerts notify users when an address appears in a newly indexed breach. Organizations can verify control of a domain and then review aggregated exposure, monitor new breaches, and receive email alerts. The service also provides exposure analytics, a free REST API with public keyless endpoints and rate limits, official SDKs, and integrations for security and investigation tools such as Microsoft Sentinel, Splunk, Wazuh, Maltego, MISP, TheHive/Cortex, and an MCP server. The website, API, and SDKs are open source; higher-volume commercial API plans are available separately.

Starting Price: $0

View Tool
3

Maltego

Maltego Technologies

Maltego is a Java application that runs on Windows, Mac and Linux. Maltego is used by a broad range of users, ranging from security professionals to forensic investigators, investigative journalists, and researchers. Easily gather information from dispersed data sources. View up to 1 million entities on a graph. Access over 58 data sources in the Maltego transform hub. Connect public (OSINT), commercial and own data sources. Write your own Transforms. Automatically link and combine all information in one graph. Automatically combine disparate data sources in point-and-click logic. Use our regex algorithms to auto-detect entity types. Enrich your data through our intuitive graphical user interface. Use entity weights to detect patterns even in the largest graphs. Annotate your graph and export it for further use.

Starting Price: €5000 per user per year

View Tool
4

Netlas.io

Netlas

Netlas.io is a network scanner and search engine on the Internet. Netlas stores DNS records of billions of domain names, hundreds of millions of HTTP responses and SSL certificates. All this information can be obtained through several tools: Responses Search: This collection consists of results from internet scans. Netlas non-intrusive scanners continuously scan internet-accessible hosts and save their responses. DNS Search: These stores domain names, their corresponding IP addresses, and other types of DNS records. IP WHOIS: Information about the owner and management of an IP address, including the IP address range, network provider name, and contact information. Domain WHOIS: Information about the domain owner and registrar, such as contact information, registrar details, registration dates, and expiration dates. Certificates: Database of SSL certificates collected from various sources. Netlas is an indispensable tool for any cybersecurity professional!

Starting Price: $49 per month

View Tool
5

Epieos

Epieos

The ultimate OSINT tool for email and phone reverse lookup. Perform an email or a phone reverse lookup on our OSINT tool to uncover all social media profiles. Because we know your investigations are sensitive, we do not save any of your requests and results. We only implement OSINT techniques that do not send a notification to the target. Only real-time results from social networks, allowing you to save time on your investigations.

Starting Price: €29.99 per month

View Tool
6

OSINT Industries

OSINT Industries

OSINT Industries is a powerful open source intelligence platform designed to accelerate online investigations with unmatched accuracy and real-time data. It enables users to perform reverse lookups on emails, phone numbers, usernames, names, or crypto wallets, compiling comprehensive digital profiles by uncovering linked accounts, social media profiles, geolocation data, and activity timelines. It accesses intelligence from over 1,000 sources worldwide, ensuring a holistic approach to data analysis and retrieval. Advanced geospatial technology allows investigators to visualize subjects' digital footprints across the globe, while interactive timelines provide a sequential narrative of online activities. OSINT Industries emphasizes privacy, employing robust encryption and never storing search results. Its state-of-the-art algorithms guarantee zero false positives, delivering trustworthy intelligence every time.

Starting Price: $25.78 per month

View Tool
7

DNSdumpster.com

DNSdumpster.com

DNSdumpster.com is a free domain research tool that can discover hosts related to a domain. Finding visible hosts from the attacker's perspective is an important part of the security assessment process. The ability to quickly identify the attack surface is essential whether you are penetration testing or chasing bug bounties. Network defenders benefit from passive reconnaissance in a number of ways, with analysis informing information security strategy. Understanding network-based OSINT helps information technologists to better operate, assess, and manage the network. Save time and headaches by incorporating our attack surface discovery into your vulnerability assessment process. No brute force subdomain enumeration is used as is common. We use open source intelligence resources to query for related domain data. It is then compiled into an actionable resource for both attackers and defenders of Internet-facing systems.

Starting Price: Free

View Tool
8

Surfface

Muskelo LLC

Surfface is an OSINT orchestrator and people search engine built for businesses that need to know who they are really dealing with online. Teams upload a face photo and optional context such as a name or handle, and Surfface scans social profiles, posts, videos and other lawful, publicly available sources. It then connects the dots so you can see the person behind an account, inbox or transaction. Security, fraud and trust and safety teams use Surfface to investigate social engineering risks, fake accounts and potential insider threats. HR and compliance teams use it to add an extra layer of open source checks around high risk roles, vendors or partners. Sales and customer facing teams use it to quickly understand the real people behind key accounts. Unlike generic reverse image tools, Surfface can discover faces in social media content, link them to profiles and surface context that helps you assess intent and risk, while staying compliant and currently focused on the US market.

Starting Price: $19.99/month/user

View Tool
9

CYBORA

CYBORA

CYBORA is a Cyber Risk Resilience platform that ties every risk to the live systems and controls behind it, then keeps checking around the clock — so exposure is measured continuously rather than reconstructed once a year. Risks carry owners, treatments, appetite thresholds and live key risk indicators on a 5x5 matrix, with control mapping across ISO 27001, NIST CSF, SOC 2, PCI DSS, HIPAA, GDPR, CIS v8, DORA and NIS2. Third-party risk runs 34 deterministic rules including DORA Article 28 concentration exposure. Assets and AI models are registered and classified for EU AI Act risk. Detection feeds the register directly: OSINT and darknet monitoring, IOC tracking, SOC case management with MITRE ATT&CK mapping and SIEM export to Splunk, Elastic and Sentinel. Business impact analysis, continuity plans and a live crisis workspace close the loop. Delivered from Lithuania, the UK and the US. Private tenant, two 256-bit keys, self-hosting, 20+ languages.

Starting Price: $250/month

View Tool
10

Insomnia

CQR

Insomnia is an autonomous AI pentesting and offensive security platform from CQR Cybersecurity. Point it at a target and its AI red team runs recon, vulnerability scanning, OSINT, CVE validation, exploitation and privilege escalation across web apps, APIs, networks, cloud and Active Directory, then writes a client-ready PDF, DOCX or HTML report with CVSS scoring and fixes. It brings 275+ security modules into one tool: SAST and DAST, secret detection with live key validation, dependency and CVE scanning, API and GraphQL testing, wireless audit, Active Directory auditing with BloodHound, an HTTP interception proxy and a CI/CD pipeline builder. It also ships Insomnia OS, a Debian-based offensive OS. There is a free Community Edition and a free SAST engine (pip, npm, Docker, Homebrew, plus VS Code and JetBrains plugins). Paid Advanced and Pro plans add full AI automation, the 30,000+ CVE database, exploitation tooling, OSINT and mobile analysis.

Starting Price: $149/month

View Tool