1
Shodan
shodan.ioAlso covers internet, security, and security research
Shodan indexes internet-connected devices and services, with search tools for examining exposed infrastructure.
Alternatives
The Best GreyNoise Alternatives in 2026
24 alternatives1 free · 0 open source
Looking for something like GreyNoise? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 1 are free or have a free plan.
GreyNoise analyzes untargeted internet scanning and attack activity reaching servers connected directly to the internet.
Top picks at a glance
First suggestionShodanShodan indexes internet-connected devices and services…Free or freemium optionConsumer Reports Security PlannerConsumer Reports Security Planner offers privacy guidance…Another optionNetlas.ioNetlas provides technical information about IP addresses…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Shodan | — | Not stated | Web |
| 2 | Netlas.io | — | Not stated | Web |
| 3 | LocalMonero | — | Not stated | Web |
| 4 | ONYPHE | — | Not stated | Web |
| 5 | FOFA | — | Not stated | Web |
| 6 | aptnotes/data | — | Not stated | — |
| 7 | Bitdefender Threat Map | — | Not stated | Web |
| 8 | Criminal IP | — | Not stated | Web |
| 9 | Digital Attack Map | — | Not stated | Web |
| 10 | NETSCOUT Cyber Threat Horizon | — | Not stated | Web |
All GreyNoise alternatives
2
Netlas.io
app.netlas.ioAlso covers internet, security, and security research · same kind of online tool
Netlas provides technical information about IP addresses, domains, websites, web apps, IoT devices and other assets.
3
LocalMonero
localmonero.coAlso covers internet, security, and security research
LocalMonero and AgoraDesk have closed their peer-to-peer cryptocurrency trading platform.
4
ONYPHE
search.onyphe.ioAlso covers internet and security research
ONYPHE scans IPs and URLs at internet scale for attack-surface discovery, management and cyber threat intelligence.
5
FOFA
fofa.infoAlso covers security and security research
FOFA maps internet-connected assets so security researchers and organizations can search services, devices, and vulnerability exposure.
6
Also covers security and security research
Browse the APTnotes repository, which collects reports and reference material about APT activity.
7
Bitdefender Threat Map
threatmap.bitdefender.comAlso covers security and security research
View Bitdefender’s map showing reported cyber threats and related activity.
8
Criminal IP
criminalip.ioAlso covers security and security research
Criminal IP provides IP reputation analysis, attack-surface monitoring, fraud detection and threat intelligence.
9
Digital Attack Map
digitalattackmap.comAlso covers security and security research
Explore a worldwide visualization of DDoS attacks through the Digital Attack Map.
10
NETSCOUT Cyber Threat Horizon
horizon.netscout.comAlso covers security and security research
View NETSCOUT’s real-time map of observed DDoS attacks around the world.
11
Live Cyber Attack Threat Map
checkpoint.com/ThreatPortal/livemap.htmlAlso covers security and security research
View the live cyber threat map published by Check Point for current threat activity.
12
Also covers security and security research · same kind of online tool · free
Consumer Reports Security Planner offers privacy guidance by asking questions about users’ needs and risks.
13
Bookmarks
one-plus.github.io/BookmarksAlso covers security and security research · same kind of online tool
The OSINT Toolkit bookmarklets run browser searches and tasks without requiring users to log in to the toolkit.
14
Also covers security and security research
Explore threat research, advisories, and security information published by FortiGuard Labs.
15
Also covers security and security research
gofoss.net guides users through replacing Google, Meta, and Microsoft services with free and open source alternatives.
16
Also covers security and security research
This Russian-language counter-OSINT guide discusses privacy and ways to reduce exposure during online investigations.
17
Scam
malwarebytes.com/blog/detections/pup-optional-…Also covers security and security research
Read Malwarebytes’ detection notes for PC Protect, a Windows system optimizer flagged as a potentially unwanted program.
18
Google & Bing
one-plus.github.io/GoogleBingAlso covers security and security research
This OSINT Toolkit page groups Google and Bing search operators for web research, including queries for sites, links and trends.
19
Cisco Talos Intelligence Group
talosintelligence.comAlso covers security and security research
Cisco Talos provides threat intelligence and directs reputation or categorization inquiries to its support site.
20
Week in OSINT
sector035.nl/articles/category:week-in-osintAlso covers security and security research
Sector035 archives weekly OSINT news articles, with a collection of published issues and updates to the migrated archive.
21
LocalBitcoins
localbitcoins.comAlso covers security and security research
LocalBitcoins has closed its Bitcoin trading service, according to the site notice.
22
Adware
malwarebytes.com/blog/detections/pup-iobitAlso covers security and security research
Read Malwarebytes’ description of the PUP.IOBit detection, including its identification of potentially unwanted IObit software for macOS.
23
The AI Risk Repository
airisk.mit.eduAlso covers security and security research
The MIT AI Risk Initiative produces authoritative data and frameworks to help you identify, prioritize, and manage the risks from AI.
24
Fake ReVanced Sites
counterfeits.revanced.appAlso covers security and security research
This page warns users about counterfeit ReVanced sites and helps them identify official sources to avoid scams.
No alternatives match this filter.
Alternatives to similar tools
Counter-OSINT guide for Russians24 alternativesFortiGuard24 alternativesaptnotes/data24 alternativesgofoss.net24 alternativesBitdefender Threat Map24 alternativesConsumer Reports Security Planner24 alternatives
What is the best alternative to GreyNoise?
Based on features, tags and platforms, the closest alternatives to GreyNoise are Shodan, Netlas.io, and LocalMonero.
Is there a free alternative to GreyNoise?
Yes. Consumer Reports Security Planner is free or offer a free plan.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative