# ImmuniWeb® Discovery alternatives and competitors (2026) The closest ImmuniWeb® Discovery alternatives are [ctlogs.dev](https://cybersectools.com/tools/ctlogsdev), [Outpost24 External Attack Surface Management](https://cybersectools.com/tools/outpost24-external-attack-surface-management) and [Halo Security Attack Surface Management](https://cybersectools.com/tools/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 alternatives. Closest matches: ctlogs.dev, Outpost24 External Attack Surface Management, Halo Security Attack Surface Management. ## The product [ImmuniWeb® Discovery](https://cybersectools.com/tools/immuniweb-discovery) 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. Category: [Exposure & Vulnerability Management](https://cybersectools.com/categories/exposure-vulnerability-management) · Pricing model: Commercial Need the answer fast? [Best Attack Surface Management Solutions for Business](https://cybersectools.com/shortlists/best-attack-surface-solutions) picks Palo Alto Networks Cortex Xpanse, Microsoft Defender EASM, Mandiant Attack Surface Management and 4 more. ## ImmuniWeb® Discovery alternatives and competitors ImmuniWeb® Discovery is a commercial [External Attack Surface Management](https://cybersectools.com/categories/external-asm) solution made by ImmuniWeb. The closest matches by shared tags and NIST CSF 2.0 coverage are [ctlogs.dev](https://cybersectools.com/tools/ctlogsdev), [Outpost24 External Attack Surface Management](https://cybersectools.com/tools/outpost24-external-attack-surface-management), [Halo Security Attack Surface Management](https://cybersectools.com/tools/halo-security-attack-surface-management), [QuimeraX External Attack Surface Management](https://cybersectools.com/tools/quimerax-external-attack-surface-management), and [Zerofox External Attack Surface Management](https://cybersectools.com/tools/zerofox-external-attack-surface-management). All 46 alternatives on this page are ranked the same way. ## The closest ImmuniWeb® Discovery alternatives These 8 solutions overlap most with ImmuniWeb® Discovery. Each one says what the product does and, when the overlap is big enough, which capabilities it shares. ### 1. [ctlogs.dev](https://cybersectools.com/tools/ctlogsdev) Fast Certificate Transparency search and JSON API for subdomain reconnaissance. [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: Real-time Certificate Transparency Search, Automated Subdomain Enumeration, High-Performance REST JSON API, Wildcard & Fingerprint Matching, SSL/TLS Certificate History Tracking [ctlogs.dev alternatives](https://cybersectools.com/alternatives/ctlogsdev) · [ImmuniWeb® Discovery vs ctlogs.dev](https://cybersectools.com/compare/ctlogsdev-vs-immuniweb-discovery) ### 2. [Outpost24 External Attack Surface Management](https://cybersectools.com/tools/outpost24-external-attack-surface-management) Cloud platform for continuous visibility & mgmt of external attack surfaces [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 10 listed. See them on the [Outpost24 External Attack Surface Management page](https://cybersectools.com/tools/outpost24-external-attack-surface-management#features). [Outpost24 External Attack Surface Management alternatives](https://cybersectools.com/alternatives/outpost24-external-attack-surface-management) · [ImmuniWeb® Discovery vs Outpost24 External Attack Surface Management](https://cybersectools.com/compare/immuniweb-discovery-vs-outpost24-external-attack-surface-management) ### 3. [Halo Security Attack Surface Management](https://cybersectools.com/tools/halo-security-attack-surface-management) External attack surface mgmt platform for discovering & monitoring assets [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 10 listed. See them on the [Halo Security Attack Surface Management page](https://cybersectools.com/tools/halo-security-attack-surface-management#features). [Halo Security Attack Surface Management alternatives](https://cybersectools.com/alternatives/halo-security-attack-surface-management) · [ImmuniWeb® Discovery vs Halo Security Attack Surface Management](https://cybersectools.com/compare/halo-security-attack-surface-management-vs-immuniweb-discovery) ### 4. [QuimeraX External Attack Surface Management](https://cybersectools.com/tools/quimerax-external-attack-surface-management) EASM platform for continuous monitoring of internet-exposed assets & vulnerabilities [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 10 listed. See them on the [QuimeraX External Attack Surface Management page](https://cybersectools.com/tools/quimerax-external-attack-surface-management#features). [QuimeraX External Attack Surface Management alternatives](https://cybersectools.com/alternatives/quimerax-external-attack-surface-management) · [ImmuniWeb® Discovery vs QuimeraX External Attack Surface Management](https://cybersectools.com/compare/immuniweb-discovery-vs-quimerax-external-attack-surface-management) ### 5. [Zerofox External Attack Surface Management](https://cybersectools.com/tools/zerofox-external-attack-surface-management) Discovers and manages internet-facing assets with vulnerability prioritization [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 10 listed. See them on the [Zerofox External Attack Surface Management page](https://cybersectools.com/tools/zerofox-external-attack-surface-management#features). [Zerofox External Attack Surface Management alternatives](https://cybersectools.com/alternatives/zerofox-external-attack-surface-management) · [ImmuniWeb® Discovery vs Zerofox External Attack Surface Management](https://cybersectools.com/compare/immuniweb-discovery-vs-zerofox-external-attack-surface-management) ### 6. [NetSPI External Attack Surface Management (EASM)](https://cybersectools.com/tools/netspi-external-attack-surface-management-easm) Continuous discovery, monitoring, and testing of external assets and exposures [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 8 listed. See them on the [NetSPI External Attack Surface Management (EASM) page](https://cybersectools.com/tools/netspi-external-attack-surface-management-easm#features). [NetSPI External Attack Surface Management (EASM) alternatives](https://cybersectools.com/alternatives/netspi-external-attack-surface-management-easm) · [ImmuniWeb® Discovery vs NetSPI External Attack Surface Management (EASM)](https://cybersectools.com/compare/immuniweb-discovery-vs-netspi-external-attack-surface-management-easm) ### 7. [Orpheus External Attack Surface Management](https://cybersectools.com/tools/orpheus-external-attack-surface-management) EASM platform with continuous asset discovery and threat intelligence context [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 10 listed. See them on the [Orpheus External Attack Surface Management page](https://cybersectools.com/tools/orpheus-external-attack-surface-management#features). [Orpheus External Attack Surface Management alternatives](https://cybersectools.com/alternatives/orpheus-external-attack-surface-management) · [ImmuniWeb® Discovery vs Orpheus External Attack Surface Management](https://cybersectools.com/compare/immuniweb-discovery-vs-orpheus-external-attack-surface-management) ### 8. [CyCraft XCockpit EASM](https://cybersectools.com/tools/cycraft-xcockpit-easm) External attack surface management platform with AI-powered risk assessment [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 10 listed. See them on the [CyCraft XCockpit EASM page](https://cybersectools.com/tools/cycraft-xcockpit-easm#features). [CyCraft XCockpit EASM alternatives](https://cybersectools.com/alternatives/cycraft-xcockpit-easm) · [ImmuniWeb® Discovery vs CyCraft XCockpit EASM](https://cybersectools.com/compare/cycraft-xcockpit-easm-vs-immuniweb-discovery) ## All 46 products like ImmuniWeb® Discovery The 8 above, plus: - [UpGuard Breach Risk](https://cybersectools.com/tools/upguard-breach-risk): External attack surface monitoring with threat intel and brand protection (Commercial) - [Aleph Search](https://cybersectools.com/tools/aleph-search-clear): OSINT tool for mapping & monitoring risk ecosystems on Clear & Deep Web. (Commercial) - [Coinnect EASM Platform](https://cybersectools.com/tools/coinnect-easm-platform): EASM platform for continuous external attack surface discovery and risk mgmt. (Commercial) - [Muscope|Risk - Attack Perimeter](https://cybersectools.com/tools/muscopeorrisk-attack-perimeter): Maps external attack surface including assets, dark web exposure, and leaks. (Commercial) - [GuardEon](https://cybersectools.com/tools/guardeon): Agentless external attack surface & dark web monitoring platform. (Commercial) - [ArmorPoint Attack Surface Management](https://cybersectools.com/tools/armorpoint-attack-surface-management): Continuous, agentless discovery and threat-intel enrichment of external internet-facing (Commercial) - [DarkInvader EASM Platform](https://cybersectools.com/tools/darkinvader-easm-platform) (Commercial) - [FalconTech Threat Hunter](https://cybersectools.com/tools/falcontech-threat-hunter) (Commercial) - [MoreSec Sentry Cloud](https://cybersectools.com/tools/moresec-sentry-cloud): AI-driven asset discovery and vulnerability risk monitoring system by MoreSec (Commercial) - [Palo Alto Networks Cortex Xpanse](https://cybersectools.com/tools/palo-alto-networks-cortex-xpanse): Active attack surface mgmt solution for discovering & remediating unknown risks (Commercial) - [Siemba EASM](https://cybersectools.com/tools/siemba-easm): AI-driven EASM platform for discovering and monitoring external-facing assets (Commercial) - [DarknetSearch Attack Surface Discovery](https://cybersectools.com/tools/darknetsearch-attack-surface-discovery): Attack surface discovery platform monitoring digital assets and data exposures (Commercial) - [Guardz External Footprint](https://cybersectools.com/tools/guardz-external-footprint): External attack surface monitoring with dark web intelligence and scanning (Commercial) - [Strobes Attack Surface Management](https://cybersectools.com/tools/strobes-attack-surface-management): Platform for continuous attack surface discovery, monitoring, and remediation (Commercial) - [ConnectSecure Attack Surface Scanning](https://cybersectools.com/tools/connectsecure-attack-surface-scanning): External attack surface scanning for MSPs to identify vulnerabilities (Commercial) - [Cyber Exposure Manager](https://cybersectools.com/tools/galileo-security): Cyber Exposure Manager: continuous visibility and remediation for external risk (Commercial) - [ThreatDefence Integrated ASM](https://cybersectools.com/tools/threatdefence-integrated-asm): ASM platform monitoring external attack surface, dark web leaks & 3rd-party risks. (Commercial) - [TRaViS](https://cybersectools.com/tools/travis): AI-enhanced EASM platform for external attack surface discovery and monitoring. (Commercial) - [DDactic Attack Surface Discovery](https://cybersectools.com/tools/ddactic-attack-surface-discovery): Scans domains to discover attack surface, vulnerabilities, and generate hardening (Commercial) - [StrikeOne Attack Surfa](https://cybersectools.com/tools/strikeone-attack-surfa): AI-powered attack surface management platform for cybersecurity monitoring (Commercial) - [Hadrian Agentic AI](https://cybersectools.com/tools/hadrian-agentic-ai): AI-powered platform for continuous attack surface discovery and pentesting (Commercial) - [Microsoft Defender EASM](https://cybersectools.com/tools/microsoft-defender-external-attack-surface-management): Discovers and monitors external-facing assets and vulnerabilities (Commercial) - [Assetnote ASM](https://cybersectools.com/tools/assetnote-asm): External attack surface management platform with continuous asset discovery (Commercial) - [Censys Attack Surface Management](https://cybersectools.com/tools/censys-attack-surface-management): Internet intelligence platform for asset discovery and attack surface mapping (Commercial) - [Risksurface](https://cybersectools.com/tools/risksurface): SaaS platform for attack surface management and vulnerability detection (Commercial) - [Intruder Attack Surface Management](https://cybersectools.com/tools/intruder-attack-surface-management): Attack surface mgmt platform with vuln scanning and cloud security features (Commercial) - [RiskXchange Attack Surface Management](https://cybersectools.com/tools/riskxchange-attack-surface-management): Attack surface management platform for monitoring vulnerabilities and breaches (Commercial) - [Pentera Surface](https://cybersectools.com/tools/pentera-surface): External attack surface mgmt with automated pentesting and validation (Commercial) - [SOC Radar Attack Surface Management](https://cybersectools.com/tools/soc-radar-attack-surface-management): SOCRadar Attack Surface Management is an EASM platform that continuously discovers, monitors, and assesses internet-facing digital assets for vulnerabilities and security risks. (Commercial) - [Matos Automated Attack Surface Management](https://cybersectools.com/tools/cloudmatos-automated-attack-surface-management): Automated ASM tool for multi-cloud environments with continuous asset discovery (Commercial) - [Synack Attack Surface Discovery](https://cybersectools.com/tools/synack-attack-surface-discovery): External attack surface mgmt with asset discovery and on-demand pentesting (Commercial) - [Akamai DNS Posture Management](https://cybersectools.com/tools/akamai-dns-posture-management): DNS security posture management across multicloud and on-prem environments (Commercial) - [Anomali Attack Surface Management](https://cybersectools.com/tools/anomali-attack-surface-management): External attack surface management platform for asset discovery and vuln mgmt (Commercial) - [CyberXTron ShadowSpot](https://cybersectools.com/tools/cyberxtron-shadowspot): External attack surface management platform for asset discovery and risk detection (Commercial) - [Axur Unified EASM + CTI](https://cybersectools.com/tools/axur-unified-easm-cti): EASM platform with integrated CTI for asset discovery and vulnerability mgmt (Commercial) - [Wallarm API Attack Surface Management](https://cybersectools.com/tools/wallarm-api-attack-surface-management): Agentless API attack surface discovery and vulnerability detection platform (Commercial) - [Detectify Surface Monitoring](https://cybersectools.com/tools/detectify-surface-monitoring): Monitors internet-facing subdomains for vulnerabilities and misconfigurations (Commercial) - [GoSecure Titan® Attack Surface Management](https://cybersectools.com/tools/gosecure-titanr-attack-surface-management): Discovers, monitors, and assesses external attack surface assets continuously. (Commercial) ## Alternatives to each of these [ctlogs.dev alternatives](https://cybersectools.com/alternatives/ctlogsdev) · [Outpost24 External Attack Surface Management alternatives](https://cybersectools.com/alternatives/outpost24-external-attack-surface-management) · [Halo Security Attack Surface Management alternatives](https://cybersectools.com/alternatives/halo-security-attack-surface-management) · [QuimeraX External Attack Surface Management alternatives](https://cybersectools.com/alternatives/quimerax-external-attack-surface-management) · [Zerofox External Attack Surface Management alternatives](https://cybersectools.com/alternatives/zerofox-external-attack-surface-management) · [NetSPI External Attack Surface Management (EASM) alternatives](https://cybersectools.com/alternatives/netspi-external-attack-surface-management-easm) · [Orpheus External Attack Surface Management alternatives](https://cybersectools.com/alternatives/orpheus-external-attack-surface-management) · [CyCraft XCockpit EASM alternatives](https://cybersectools.com/alternatives/cycraft-xcockpit-easm) · [UpGuard Breach Risk alternatives](https://cybersectools.com/alternatives/upguard-breach-risk) · [Aleph Search alternatives](https://cybersectools.com/alternatives/aleph-search-clear) · [Coinnect EASM Platform alternatives](https://cybersectools.com/alternatives/coinnect-easm-platform) · [Muscope|Risk - Attack Perimeter alternatives](https://cybersectools.com/alternatives/muscopeorrisk-attack-perimeter) ## Other ImmuniWeb products [Dark Web Exposure Test by ImmuniWeb alternatives](https://cybersectools.com/alternatives/dark-web-exposure-test-by-immuniweb) · [Email Security Test by ImmuniWeb alternatives](https://cybersectools.com/alternatives/email-security-test-by-immuniweb) · [ImmuniWeb Cloud Security Test alternatives](https://cybersectools.com/alternatives/immuniweb-cloud-security-test) · [ImmuniWeb SSL Test alternatives](https://cybersectools.com/alternatives/immuniweb-ssl-test) · [ImmuniWeb® AI Platform alternatives](https://cybersectools.com/alternatives/immuniweb-websec-security-test) · [ImmuniWeb® Continuous Penetration Testing alternatives](https://cybersectools.com/alternatives/immuniwebr-continuous-penetration-testing) · [ImmuniWeb® MobileSuite alternatives](https://cybersectools.com/alternatives/immuniwebr-mobilesuite) · [ImmuniWeb® Neuron alternatives](https://cybersectools.com/alternatives/immuniwebr-neuron) ## Compare ImmuniWeb® Discovery with - [ImmuniWeb® Discovery vs ctlogs.dev](https://cybersectools.com/compare/ctlogsdev-vs-immuniweb-discovery) - [ImmuniWeb® Discovery vs Outpost24 External Attack Surface Management](https://cybersectools.com/compare/immuniweb-discovery-vs-outpost24-external-attack-surface-management) - [ImmuniWeb® Discovery vs Halo Security Attack Surface Management](https://cybersectools.com/compare/halo-security-attack-surface-management-vs-immuniweb-discovery) - [ImmuniWeb® Discovery vs QuimeraX External Attack Surface Management](https://cybersectools.com/compare/immuniweb-discovery-vs-quimerax-external-attack-surface-management) - [ImmuniWeb® Discovery vs Zerofox External Attack Surface Management](https://cybersectools.com/compare/immuniweb-discovery-vs-zerofox-external-attack-surface-management) - [ImmuniWeb® Discovery vs NetSPI External Attack Surface Management (EASM)](https://cybersectools.com/compare/immuniweb-discovery-vs-netspi-external-attack-surface-management-easm) - [ImmuniWeb® Discovery vs Orpheus External Attack Surface Management](https://cybersectools.com/compare/immuniweb-discovery-vs-orpheus-external-attack-surface-management) - [ImmuniWeb® Discovery vs CyCraft XCockpit EASM](https://cybersectools.com/compare/cycraft-xcockpit-easm-vs-immuniweb-discovery) ## ImmuniWeb® Discovery Alternatives FAQ ### What are the closest 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. ### How many alternatives to ImmuniWeb® Discovery are available? 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. ### Is ImmuniWeb® Discovery free or commercial? 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. ### What type of solution is ImmuniWeb® Discovery? 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. --- Source: https://cybersectools.com/alternatives/immuniweb-discovery For AI agents: every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md, and any product or compare page has a Markdown copy too (add .md to its URL). More on ImmuniWeb® Discovery and its alternatives: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=alternatives-md