The product
A tool for detecting and taking over subdomains with dead DNS records
The closest tko-subs alternatives are ctlogs.dev, Searchlight Exposure and Ceeyu Digital Footprint Monitoring. Picking a tko-subs 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.
44 alternativesClosest matches: ctlogs.dev, Searchlight Exposure, Ceeyu Digital Footprint MonitoringPage updated Nov 2026
The product
A tool for detecting and taking over subdomains with dead DNS records
tko-subs is a free External Attack Surface Management solution. The closest matches by shared tags and NIST CSF 2.0 coverage are ctlogs.dev, Searchlight Exposure, Ceeyu Digital Footprint Monitoring, ThreatDefence Integrated ASM, and TRaViS. All 44 alternatives on this page are ranked the same way.
These 8 solutions overlap most with tko-subs. 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 alternativestko-subs vs ctlogs.dev
ASM platform that scans external attack surfaces hourly for vulnerabilities
Key features: 10 listed. See them on the Searchlight Exposure page.
View Searchlight ExposureSearchlight Exposure alternativestko-subs vs Searchlight Exposure
Automated digital asset discovery and monitoring for external attack surface
Key features: 10 listed. See them on the Ceeyu Digital Footprint Monitoring page.
View Ceeyu Digital Footprint MonitoringCeeyu Digital Footprint Monitoring alternativestko-subs vs Ceeyu Digital Footprint Monitoring
ASM platform monitoring external attack surface, dark web leaks & 3rd-party risks.
Key features: 10 listed. See them on the ThreatDefence Integrated ASM page.
View ThreatDefence Integrated ASMThreatDefence Integrated ASM alternativestko-subs vs ThreatDefence Integrated ASM
AI-enhanced EASM platform for external attack surface discovery and monitoring.
Key features: 10 listed. See them on the TRaViS page.
Provide intelligence about a domain
Key features: 6 listed. See them on the Domain Beacon page.
View Domain BeaconDomain Beacon alternativestko-subs vs Domain Beacon
Continuous, agentless discovery and threat-intel enrichment of external internet-facing
Key features: 9 listed. See them on the ArmorPoint Attack Surface Management page.
View ArmorPoint Attack Surface ManagementArmorPoint Attack Surface Management alternativestko-subs vs ArmorPoint Attack Surface Management
Threat Hunter is a continuous monitoring platform combining four services: attack surface monitoring, brand protection, dark web monitoring, and threat intelligence. It continuously maps an organization's external footprint, including domains, subdomains, certificates, and cloud assets, fingerprinting new assets and scanning for misconfigurations and vulnerabilities. Findings feed into an agentic penetration testing target list. The brand protection component monitors domain registrations, certificate logs, app stores, and social platforms for lookalike domains, typosquats, homoglyphs, phishing kits, cloned login pages, and executive or brand impersonation. The dark web monitoring service tracks leaked credentials, combolists, infostealer logs, and stolen payment card data tied to an organization's domains, sourced from cybercrime forums, markets, and Telegram channels. The intelligence service correlates CVE data, ransomware group activity, and APT tracking aligned to MITRE ATT&CK against the software fingerprinted on the customer's attack surface, along with sector and geography risk reporting. Credential intelligence data underlying the platform is also offered as an API for MSSPs, ISPs, and security vendors to query domains for breached credentials.</description> <parameter name="summary">Continuous attack surface, brand, dark web and threat intel monitoring platform
Key features: 10 listed. See them on the FalconTech Threat Hunter page.
Fast Certificate Transparency search and JSON API for subdomain reconnaissance.
ASM platform that scans external attack surfaces hourly for vulnerabilities
Automated digital asset discovery and monitoring for external attack surface
ASM platform monitoring external attack surface, dark web leaks & 3rd-party risks.
AI-enhanced EASM platform for external attack surface discovery and monitoring.
Continuous, agentless discovery and threat-intel enrichment of external internet-facing
Scans domains to discover attack surface, vulnerabilities, and generate hardening
Platform for external attack surface management and application security testing
Discovers and inventories internet-facing assets including subdomains, IPs, and apps.
Attack surface management platform for discovering and securing exposed assets
AI-powered EASM platform for digital asset discovery and monitoring.
Continuous exposure detection & verification engine for attack surface mgmt.
Continuous external attack surface monitoring that shows what changed between scans.
Agentless external attack surface monitoring with continuous change detection.
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 management platform for discovering digital 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
Supply chain intelligence platform mapping digital ecosystems & proximity risks
Attack surface management platform for monitoring vulnerabilities and breaches
Discovers and manages internet-facing assets with vulnerability prioritization
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
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
Active attack surface mgmt solution for discovering & remediating unknown risks
Passive asset discovery platform using Netflow data for attack surface mapping
External attack surface management platform for asset discovery and vuln mgmt
AI-driven EASM platform for discovering and monitoring external-facing assets
External attack surface management platform for asset discovery and risk detection
EASM platform with integrated CTI for asset discovery and vulnerability mgmt
Cytrusst ASM is an attack surface management product that helps discover an organization's
Agentless API attack surface discovery and vulnerability detection platform
Discovers, monitors, and assesses external attack surface assets continuously.
Continuous discovery, monitoring, and testing of external assets and exposures
EASM platform with continuous asset discovery and threat intelligence context
Common questions when weighing alternatives to tko-subs.
The closest matches to tko-subs by shared tags and NIST CSF 2.0 coverage are ctlogs.dev, Searchlight Exposure, Ceeyu Digital Footprint Monitoring, ThreatDefence Integrated ASM, and TRaViS. All of them are External Attack Surface Management products.
This page shows 44 alternatives to tko-subs, 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.
tko-subs 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.
tko-subs is a External Attack Surface Management product in the Exposure & Vulnerability Management category. You can compare it with the 44 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
