Shodan AlternativesOnly Free apps categorised as Network Monitors

The best free Network Monitor alternative to Shodan is Censys, which is also Open Source. If that doesn't work for you, our users have ranked more than 25 alternatives to Shodan, but unfortunately only two of them are free Network Monitors. If you can't find an alternative you can try to remove all filters.

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Shodan alternatives are mainly Vulnerability Scanners but may also be Network Monitors or Network Analyzers. Other popular filters includes Free + Penetration Testing and Free + Vulnerability Scanner. Filter by these or use the filter bar below if you want a narrower list of alternatives or looking for a specific functionality of Shodan.

Shodan

IP Address Lookup Tool
Freemium • Proprietary

Shodan is a search engine that lets you find specific computers (routers, servers, etc.) using a variety of filters. Some have also described it as a public port scan directory or a search engine of banners.

More about Shodan

Shodan alternatives page was last updated Jan 11, 2023

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Censys
21 likes
Censys is a search engine that allows computer scientists to ask questions about the devices and networks that compose the internet.
24 Censys alternatives
License model
Freemium • Open Source
Application types
Vulnerability Scanner
Network Monitor
Platforms
Online
Censys Features
Security Monitoring
Network Scanner
Censys VS Shodan
Is Censys a good alternative to Shodan?
Comments about Censys as an Alternative to Shodan

Guest
Fresher data, more ports scanned
Positive comment •Dec 7, 2020
0
Guest
no limit on number of searches, lots of filters
Positive comment •May 5, 2020
0
- Most users think Censys is a great Shodan alternative.
- Censys is the most popular Open Source alternative to Shodan.
- Censys is Freemium and Open SourceShodan is Freemium and Proprietary

IVRE
21 likes
Network recon framework, including a web interface to browse Nmap scan results.
12 IVRE alternatives
License model
Free • Open Source
Application types
IP Address Lookup Tool
Network Monitor
Platforms
Mac
Windows
Linux
Online
BSD
Self-Hosted
IVRE Features
Command line interface
No registration required
Works Offline
Network Scanner
+2
IVRE VS Shodan
Is IVRE a good alternative to Shodan?
Comments about IVRE as an Alternative to Shodan

nm17
Great for indexing local networks and such
Positive comment •Oct 11, 2020
0
Guest
Because it's an open-source framework for scanning, indexing and researching data about connected device... Like Shodan.
Positive comment •Jun 1, 2017
0
Guest
Because it's completely free and open-source and works exactly like Shodan.
Positive comment •Mar 4, 2020
0
- Some users think IVRE is a great Shodan alternative, some don't.
- IVRE is the most popular Windows, Mac, Linux & Self-Hosted alternative to Shodan.
- IVRE is Free and Open SourceShodan is Freemium and Proprietary