The closest ImmuniWeb® Discovery alternatives are ctlogs.dev, Outpost24 External Attack Surface Management and Halo Security Attack Surface Management. Picking an ImmuniWeb® Discovery alternative comes down to fit: External Attack Surface Management coverage, your environment, your integrations and your budget. So each option below shows what it covers, how it deploys, its pricing model and the company behind it.
46 alternativesClosest matches: ctlogs.dev, Outpost24 External Attack Surface Management, Halo Security Attack Surface ManagementPage updated Nov 2026
The product
by ImmuniWeb
ImmuniWeb Discovery is an attack surface management platform that continuously monitors an organization's external digital assets for security vulnerabilities, misconfigurations, and threats across domains, applications, cloud resources, and the dark web.
ImmuniWeb® Discovery is a commercial External Attack Surface Management solution made by ImmuniWeb. The closest matches by shared tags and NIST CSF 2.0 coverage are ctlogs.dev, Outpost24 External Attack Surface Management, Halo Security Attack Surface Management, QuimeraX External Attack Surface Management, and Zerofox External Attack Surface Management. All 46 alternatives on this page are ranked the same way.
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VisitThese 8 solutions overlap most with ImmuniWeb® Discovery. Each row says what the product does and, when the overlap is big enough, which capabilities it shares.
Fast Certificate Transparency search and JSON API for subdomain reconnaissance.
Key features: Real-time Certificate Transparency Search, Automated Subdomain Enumeration, High-Performance REST JSON API, Wildcard & Fingerprint Matching, SSL/TLS Certificate History Tracking
View ctlogs.devctlogs.dev alternativesImmuniWeb® Discovery vs ctlogs.dev
Fast Certificate Transparency search and JSON API for subdomain reconnaissance.
Cloud platform for continuous visibility & mgmt of external attack surfaces
External attack surface mgmt platform for discovering & monitoring assets
EASM platform for continuous monitoring of internet-exposed assets & vulnerabilities
Discovers and manages internet-facing assets with vulnerability prioritization
Continuous discovery, monitoring, and testing of external assets and exposures
EASM platform with continuous asset discovery and threat intelligence context
External attack surface management platform with AI-powered risk assessment
External attack surface monitoring with threat intel and brand protection
OSINT tool for mapping & monitoring risk ecosystems on Clear & Deep Web.
EASM platform for continuous external attack surface discovery and risk mgmt.
Maps external attack surface including assets, dark web exposure, and leaks.
Agentless external attack surface & dark web monitoring platform.
Continuous, agentless discovery and threat-intel enrichment of external internet-facing
AI-driven asset discovery and vulnerability risk monitoring system by MoreSec
Active attack surface mgmt solution for discovering & remediating unknown risks
AI-driven EASM platform for discovering and monitoring external-facing assets
Attack surface discovery platform monitoring digital assets and data exposures
External attack surface monitoring with dark web intelligence and scanning
Platform for continuous attack surface discovery, monitoring, and remediation
External attack surface scanning for MSPs to identify vulnerabilities
Cyber Exposure Manager: continuous visibility and remediation for external risk
ASM platform monitoring external attack surface, dark web leaks & 3rd-party risks.
AI-enhanced EASM platform for external attack surface discovery and monitoring.
Scans domains to discover attack surface, vulnerabilities, and generate hardening
AI-powered attack surface management platform for cybersecurity monitoring
AI-powered platform for continuous attack surface discovery and pentesting
Discovers and monitors external-facing assets and vulnerabilities
External attack surface management platform with continuous asset discovery
Internet intelligence platform for asset discovery and attack surface mapping
SaaS platform for attack surface management and vulnerability detection
Attack surface mgmt platform with vuln scanning and cloud security features
Attack surface management platform for monitoring vulnerabilities and breaches
External attack surface mgmt with automated pentesting and validation
SOCRadar Attack Surface Management is an EASM platform that continuously discovers, monitors, and assesses internet-facing digital assets for vulnerabilities and security risks.
Automated ASM tool for multi-cloud environments with continuous asset discovery
External attack surface mgmt with asset discovery and on-demand pentesting
DNS security posture management across multicloud and on-prem environments
External attack surface management platform for asset discovery and vuln mgmt
External attack surface management platform for asset discovery and risk detection
EASM platform with integrated CTI for asset discovery and vulnerability mgmt
Agentless API attack surface discovery and vulnerability detection platform
Monitors internet-facing subdomains for vulnerabilities and misconfigurations
Discovers, monitors, and assesses external attack surface assets continuously.
Common questions when weighing alternatives to ImmuniWeb® Discovery.
The closest matches to ImmuniWeb® Discovery by shared tags and NIST CSF 2.0 coverage are ctlogs.dev, Outpost24 External Attack Surface Management, Halo Security Attack Surface Management, QuimeraX External Attack Surface Management, and Zerofox External Attack Surface Management. All of them are External Attack Surface Management products.
This page shows 46 alternatives to ImmuniWeb® Discovery, all in the External Attack Surface Management category. Each one is matched on shared tags and NIST CSF 2.0 areas, and the closest matches rank first.
ImmuniWeb® Discovery is a commercial External Attack Surface Management product. It needs a paid license or subscription. Only commercial alternatives are listed here. Free and open source products are under /free.
ImmuniWeb® Discovery is a External Attack Surface Management product in the Exposure & Vulnerability Management category. You can compare it with the 46 other External Attack Surface Management products on this page.
Cloud platform for continuous visibility & mgmt of external attack surfaces
Key features: 10 listed. See them on the Outpost24 External Attack Surface Management page.
View Outpost24 External Attack Surface ManagementOutpost24 External Attack Surface Management alternativesImmuniWeb® Discovery vs Outpost24 External Attack Surface Management
External attack surface mgmt platform for discovering & monitoring assets
Key features: 10 listed. See them on the Halo Security Attack Surface Management page.
View Halo Security Attack Surface ManagementHalo Security Attack Surface Management alternativesImmuniWeb® Discovery vs Halo Security Attack Surface Management
EASM platform for continuous monitoring of internet-exposed assets & vulnerabilities
Key features: 10 listed. See them on the QuimeraX External Attack Surface Management page.
View QuimeraX External Attack Surface ManagementQuimeraX External Attack Surface Management alternativesImmuniWeb® Discovery vs QuimeraX External Attack Surface Management
Discovers and manages internet-facing assets with vulnerability prioritization
Key features: 10 listed. See them on the Zerofox External Attack Surface Management page.
View Zerofox External Attack Surface ManagementZerofox External Attack Surface Management alternativesImmuniWeb® Discovery vs Zerofox External Attack Surface Management
Continuous discovery, monitoring, and testing of external assets and exposures
Key features: 8 listed. See them on the NetSPI External Attack Surface Management (EASM) page.
View NetSPI External Attack Surface Management (EASM)NetSPI External Attack Surface Management (EASM) alternativesImmuniWeb® Discovery vs NetSPI External Attack Surface Management (EASM)
EASM platform with continuous asset discovery and threat intelligence context
Key features: 10 listed. See them on the Orpheus External Attack Surface Management page.
View Orpheus External Attack Surface ManagementOrpheus External Attack Surface Management alternativesImmuniWeb® Discovery vs Orpheus External Attack Surface Management
External attack surface management platform with AI-powered risk assessment
Key features: 10 listed. See them on the CyCraft XCockpit EASM page.
View CyCraft XCockpit EASMCyCraft XCockpit EASM alternativesImmuniWeb® Discovery vs CyCraft XCockpit EASM
Need the answer fast? Best Attack Surface Management Solutions for Business picks Palo Alto Networks Cortex Xpanse, Microsoft Defender EASM, Mandiant Attack Surface Management and 4 more.See the shortlist