Shodan Competitors

Censys is the authority in Internet intelligence and insights. Delivering the most comprehensive, accurate, and up-to-date global map of Internet infrastructure, Censys provides the real-time external visibility organizations need to accelerate security operations, investigate threats, and understand Internet exposure. Global governments, Fortune 500 companies, and security providers trust Censys to uncover risks faster and respond more effectively.

GreyNoise empowers defenders to work on the most urgent and critical threats without being overwhelmed by noisy, low-priority alerts. We provide real-time, verifiable threat intelligence powered by the largest and most sophisticated internet sensor network.

Vulners is a vulnerability database with an API. Send us your assets in whatever shape you have them - inventories, SBOM, host data - and get back every vulnerability that affects them, already enriched with exploits, KEV, CVSS and EPSS, and ranked by real-world risk. Prioritize like an attacker, not a spreadsheet. No scanner to deploy, no agents to install, no feeds to stitch. Behind it: 230+ sources - CVEs, advisories, exploits, patches, KEV, scoring - normalized into one connected, machine-readable graph where every record is linked, so each vulnerability carries its full context from discovery to exploit to fix. Our AI scoring weighs CVSS, EPSS, and real-world exploitation, so the things that actually matter rise to the top. Enterprise security teams use Vulners to sharpen triage and automate remediation. Cybersecurity product builders, cloud platforms, and MSSPs use it as the data layer behind their own security features - and a new revenue stream. Built in 2015 by information security professionals. 230+ sources · 7M+ records · 270k+ exploits · 99.9% API SLA.