The product
A Certificate Transparency log monitor that alerts users when SSL/TLS certificates are issued for their domains, helping detect unauthorized certificate issuance and potential security threats.
The closest Cert Spotter alternatives are ctlogs.dev, crt.guru and Attack Surface Scan. Picking a Cert Spotter 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.
42 alternativesClosest matches: ctlogs.dev, crt.guru, Attack Surface ScanPage updated Nov 2026
The product
A Certificate Transparency log monitor that alerts users when SSL/TLS certificates are issued for their domains, helping detect unauthorized certificate issuance and potential security threats.
Cert Spotter is a free External Attack Surface Management solution. The closest matches by shared tags and NIST CSF 2.0 coverage are ctlogs.dev, crt.guru, Attack Surface Scan, Guardz External Footprint, and SurfaceDiff. All 42 alternatives on this page are ranked the same way.
These 8 solutions overlap most with Cert Spotter. 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 alternativesCert Spotter vs ctlogs.dev
External TLS cert monitoring with expiry alerts, vuln scanning & compliance reports.
Key features: 10 listed. See them on the crt.guru page.
Shares 3 capabilities with Cert Spotter: TLS, SSL, Alerting
Agentless external attack surface monitoring with continuous change detection.
Key features: 10 listed. See them on the Attack Surface Scan page.
Shares 3 capabilities with Cert Spotter: TLS, SSL, Alerting
View Attack Surface ScanAttack Surface Scan alternativesCert Spotter vs Attack Surface Scan
External attack surface monitoring with dark web intelligence and scanning
Key features: 10 listed. See them on the Guardz External Footprint page.
View Guardz External FootprintGuardz External Footprint alternativesCert Spotter vs Guardz External Footprint
Continuous external attack surface monitoring that shows what changed between scans.
Key features: 9 listed. See them on the SurfaceDiff page.
View SurfaceDiffSurfaceDiff alternativesCert Spotter vs SurfaceDiff
SOCRadar DNS Monitoring provides real-time monitoring of DNS infrastructure with automated discovery, record change alerts, and detection of DNS-based security threats.
View SOC Radar DNS MonitoringSOC Radar DNS Monitoring alternativesCert Spotter vs SOC Radar DNS Monitoring
AI-driven EASM platform for discovering and monitoring external-facing assets
Key features: 10 listed. See them on the Siemba EASM page.
View Siemba EASMSiemba EASM alternativesCert Spotter vs Siemba EASM
Customizable ASM platform for asset discovery, monitoring, and enrichment
Key features: 10 listed. See them on the Trickest ASM - Attack Surface Management page.
View Trickest ASM - Attack Surface ManagementTrickest ASM - Attack Surface Management alternativesCert Spotter vs Trickest ASM - Attack Surface Management
Fast Certificate Transparency search and JSON API for subdomain reconnaissance.
External TLS cert monitoring with expiry alerts, vuln scanning & compliance reports.
Agentless external attack surface monitoring with continuous change detection.
External attack surface monitoring with dark web intelligence and scanning
Continuous external attack surface monitoring that shows what changed between scans.
SOCRadar DNS Monitoring provides real-time monitoring of DNS infrastructure with automated discovery, record change alerts, and detection of DNS-based security threats.
AI-driven EASM platform for discovering and monitoring external-facing assets
Customizable ASM platform for asset discovery, monitoring, and enrichment
Continuous exposure detection & verification engine for attack surface mgmt.
ASM platform monitoring external attack surface, dark web leaks & 3rd-party risks.
DNS posture mgmt platform for real-time DNS & WHOIS change monitoring.
Internet-wide scanning platform for discovering exposed devices, services
AI-driven asset discovery and vulnerability risk monitoring system by MoreSec
Scans domains to discover attack surface, vulnerabilities, and generate hardening
External attack surface management built on the DNS you already control.
Cloud platform for continuous visibility & mgmt of external attack surfaces
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 mgmt platform for discovering & monitoring assets
Internet intelligence platform for asset discovery and attack surface mapping
SaaS platform for attack surface management and vulnerability detection
EASM platform for continuous monitoring of internet-exposed assets & vulnerabilities
Attack surface mgmt platform with vuln scanning and cloud security features
Attack surface management platform for monitoring vulnerabilities and breaches
Discovers and monitors external internet assets for exposures and vulnerabilities
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.
External attack surface mgmt with automated pentesting and validation
Automated ASM tool for multi-cloud environments with continuous asset discovery
External attack surface mgmt with asset discovery and on-demand pentesting
Active attack surface mgmt solution for discovering & remediating unknown risks
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
Attack surface discovery platform monitoring digital assets and data exposures
Platform for external attack surface management and application security testing
Discovers, monitors, and assesses external attack surface assets continuously.
Continuous discovery, monitoring, and testing of external assets and exposures
External attack surface management with continuous security testing
EASM platform with continuous asset discovery and threat intelligence context
LLM-powered security platform for finding and fixing security gaps
Common questions when weighing alternatives to Cert Spotter.
The closest matches to Cert Spotter by shared tags and NIST CSF 2.0 coverage are ctlogs.dev, crt.guru, Attack Surface Scan, Guardz External Footprint, and SurfaceDiff. All of them are External Attack Surface Management products.
This page shows 42 alternatives to Cert Spotter, 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.
Cert Spotter is a free External Attack Surface Management product. You can use it at no cost. Only commercial alternatives are listed here. Free and open source products are under /free.
Cert Spotter is a External Attack Surface Management product in the Exposure & Vulnerability Management category. You can compare it with the 42 other External Attack Surface Management products on this page.
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
