# crt.sh alternatives and competitors (2026) The closest crt.sh alternatives are [ctlogs.dev](https://cybersectools.com/tools/ctlogsdev), [MGM Security Partners recon me](https://cybersectools.com/tools/mgm-security-partners-recon-me) and [DDactic Attack Surface Discovery](https://cybersectools.com/tools/ddactic-attack-surface-discovery). Picking a crt.sh 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. 45 alternatives. Closest matches: ctlogs.dev, MGM Security Partners recon me, DDactic Attack Surface Discovery. ## The product [crt.sh](https://cybersectools.com/tools/crt-sh) Bash script for subdomain enumeration via crt.sh certificate transparency logs. Category: [Exposure & Vulnerability Management](https://cybersectools.com/categories/exposure-vulnerability-management) · Pricing model: Free 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. ## crt.sh alternatives and competitors crt.sh is a free [External Attack Surface Management](https://cybersectools.com/categories/external-asm) solution. The closest matches by shared tags and NIST CSF 2.0 coverage are [ctlogs.dev](https://cybersectools.com/tools/ctlogsdev), [MGM Security Partners recon me](https://cybersectools.com/tools/mgm-security-partners-recon-me), [DDactic Attack Surface Discovery](https://cybersectools.com/tools/ddactic-attack-surface-discovery), [SurfaceDiff](https://cybersectools.com/tools/surfacediff), and [Attack Surface Scan](https://cybersectools.com/tools/attack-surface-scan). All 45 alternatives on this page are ranked the same way. Want a free option? See [free and open source exposure & vulnerability management solutions](https://cybersectools.com/free), plus free picks in other categories. ## The closest crt.sh alternatives These 8 solutions overlap most with crt.sh. 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 Shares 4 capabilities with crt.sh: SSL, Reconnaissance, DNS Security, Subdomain Enumeration [ctlogs.dev alternatives](https://cybersectools.com/alternatives/ctlogsdev) · [crt.sh vs ctlogs.dev](https://cybersectools.com/compare/crt-sh-vs-ctlogsdev) ### 2. [MGM Security Partners recon me](https://cybersectools.com/tools/mgm-security-partners-recon-me) recon me is an OSINT tool developed by mgm Security Partners and used as part of the company's OSINT analysis service. The tool collects and correlates publicly available information about an organization's external attack surface, including domains, subdomains, servers, technologies used, metadata, and publicly accessible files. It supports two scan modes: - Passive scan: queries public directory services such as Whois, DNS, and MX records to identify servers, subdomains, email addresses, technologies, and operators (e.g. Amazon, Akamai) without any interaction with target systems. - Active scan: directly examines the target domain without performing attacks, to identify additional services, technologies, or unintentionally exposed files. Results from recon me are combined with manual expert analysis and used to produce a report detailing identified assets, potential vulnerabilities, misconfigurations, and prioritized recommendations. The output is intended to give organizations a view of their public attack surface from an attacker's perspective and can serve as a basis for further security testing such as penetration tests. Proprietary OSINT tool for mapping an organization's public attack surface [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 8 listed. See them on the [MGM Security Partners recon me page](https://cybersectools.com/tools/mgm-security-partners-recon-me#features). Shares 5 capabilities with crt.sh: Reconnaissance, Security Scanning, Network Reconnaissance, DNS Security +1 more [MGM Security Partners recon me alternatives](https://cybersectools.com/alternatives/mgm-security-partners-recon-me) · [crt.sh vs MGM Security Partners recon me](https://cybersectools.com/compare/crt-sh-vs-mgm-security-partners-recon-me) ### 3. [DDactic Attack Surface Discovery](https://cybersectools.com/tools/ddactic-attack-surface-discovery) Scans domains to discover attack surface, vulnerabilities, and generate hardening [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 10 listed. See them on the [DDactic Attack Surface Discovery page](https://cybersectools.com/tools/ddactic-attack-surface-discovery#features). Shares 5 capabilities with crt.sh: SSL, Reconnaissance, Security Scanning, DNS Security +1 more [DDactic Attack Surface Discovery alternatives](https://cybersectools.com/alternatives/ddactic-attack-surface-discovery) · [crt.sh vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/crt-sh-vs-ddactic-attack-surface-discovery) ### 4. [SurfaceDiff](https://cybersectools.com/tools/surfacediff) Continuous external attack surface monitoring that shows what changed between scans. [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 9 listed. See them on the [SurfaceDiff page](https://cybersectools.com/tools/surfacediff#features). Shares 4 capabilities with crt.sh: Reconnaissance, Security Scanning, DNS Security, Subdomain Enumeration [SurfaceDiff alternatives](https://cybersectools.com/alternatives/surfacediff) · [crt.sh vs SurfaceDiff](https://cybersectools.com/compare/crt-sh-vs-surfacediff) ### 5. [Attack Surface Scan](https://cybersectools.com/tools/attack-surface-scan) Agentless external attack surface monitoring with continuous change detection. [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 10 listed. See them on the [Attack Surface Scan page](https://cybersectools.com/tools/attack-surface-scan#features). Shares 4 capabilities with crt.sh: SSL, Security Scanning, DNS Security, Subdomain Enumeration [Attack Surface Scan alternatives](https://cybersectools.com/alternatives/attack-surface-scan) · [crt.sh vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-crt-sh) ### 6. [Cylana EASM](https://cybersectools.com/tools/cylana-easm) AI-powered EASM platform for digital asset discovery and monitoring. [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 5 listed. See them on the [Cylana EASM page](https://cybersectools.com/tools/cylana-easm#features). Shares 3 capabilities with crt.sh: Reconnaissance, Security Scanning, Subdomain Enumeration [Cylana EASM alternatives](https://cybersectools.com/alternatives/cylana-easm) · [crt.sh vs Cylana EASM](https://cybersectools.com/compare/crt-sh-vs-cylana-easm) ### 7. [TRaViS](https://cybersectools.com/tools/travis) AI-enhanced EASM platform for external attack surface discovery and monitoring. [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 10 listed. See them on the [TRaViS page](https://cybersectools.com/tools/travis#features). Shares 3 capabilities with crt.sh: Reconnaissance, Security Scanning, Subdomain Enumeration [TRaViS alternatives](https://cybersectools.com/alternatives/travis) · [crt.sh vs TRaViS](https://cybersectools.com/compare/crt-sh-vs-travis) ### 8. [ThreatDefence Integrated ASM](https://cybersectools.com/tools/threatdefence-integrated-asm) ASM platform monitoring external attack surface, dark web leaks & 3rd-party risks. [External Attack Surface Management](https://cybersectools.com/categories/external-asm) · Commercial Key features: 10 listed. See them on the [ThreatDefence Integrated ASM page](https://cybersectools.com/tools/threatdefence-integrated-asm#features). Shares 3 capabilities with crt.sh: SSL, DNS Security, Subdomain Enumeration [ThreatDefence Integrated ASM alternatives](https://cybersectools.com/alternatives/threatdefence-integrated-asm) · [crt.sh vs ThreatDefence Integrated ASM](https://cybersectools.com/compare/crt-sh-vs-threatdefence-integrated-asm) ## All 45 products like crt.sh The 8 above, plus: - [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) - [Detectify Platform](https://cybersectools.com/tools/detectify-platform): Platform for external attack surface management and application security testing (Commercial) - [Muscope|Risk - Attack Perimeter](https://cybersectools.com/tools/muscopeorrisk-attack-perimeter): Maps external attack surface including assets, dark web exposure, and leaks. (Commercial) - [Attaxion](https://cybersectools.com/tools/attaxion): Agentless EASM platform for asset discovery, exposure mgmt & risk reduction. (Commercial) - [Sn1per Professional 2026](https://cybersectools.com/tools/sn1per-professional-2026): Sn1per Professional 2026: automated penetration testing & attack surface management (Commercial) - [Domain Beacon](https://cybersectools.com/tools/domain-beacon): Provide intelligence about a domain (Commercial) - [Guardz External Footprint](https://cybersectools.com/tools/guardz-external-footprint): External attack surface monitoring with dark web intelligence and scanning (Commercial) - [Qontrol Avant-Vente](https://cybersectools.com/tools/qontrol-avant-vente): Passive pre-sale domain diagnostic tool for vCISOs, MSPs & MSSPs. (Commercial) - [crt.guru](https://cybersectools.com/tools/crtguru): External TLS cert monitoring with expiry alerts, vuln scanning & compliance reports. (Commercial) - [AYAsec](https://cybersectools.com/tools/ayasec): External attack surface management built on the DNS you already control. (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) - [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) - [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) - [Akamai DNS Posture Management](https://cybersectools.com/tools/akamai-dns-posture-management): DNS security posture management across multicloud and on-prem environments (Commercial) - [Halo Security Attack Surface Discovery](https://cybersectools.com/tools/halo-security-attack-surface-discovery): Discovers and inventories internet-facing assets including subdomains, IPs, and apps. (Commercial) - [Trickest ASM - Attack Surface Management](https://cybersectools.com/tools/trickest-asm-attack-surface-management): Customizable ASM platform for asset discovery, monitoring, and enrichment (Commercial) - [Criminal IP Security Scanning Service](https://cybersectools.com/tools/criminal-ip-security-scanning-service): Internet-connected asset search engine with vulnerability scanning capabilities (Commercial) - [Intruder Discover Attack Surface](https://cybersectools.com/tools/intruder-discover-attack-surface): Attack surface management platform for discovering and securing exposed assets (Commercial) - [CyCognito EASM Platform](https://cybersectools.com/tools/cycognito-easm-platform): EASM platform that discovers, attributes, and actively validates external assets and risks (Commercial) - [Searchlight Exposure](https://cybersectools.com/tools/assetnote-attack-surface-management-tool): ASM platform that scans external attack surfaces hourly for vulnerabilities (Commercial) - [Ceeyu Digital Footprint Monitoring](https://cybersectools.com/tools/ceeyu-digital-footprint-monitoring): Automated digital asset discovery and monitoring for external attack surface (Commercial) - [Edgescan Attack Surface Management (ASM)](https://cybersectools.com/tools/edgescan-attack-surface-management-asm): External attack surface management platform for asset discovery and monitoring (Commercial) - [Zerocopter Recon](https://cybersectools.com/tools/zerocopter-recon): External attack surface mapping service to discover exposed digital assets (Commercial) - [Aleph Search](https://cybersectools.com/tools/aleph-search-clear): OSINT tool for mapping & monitoring risk ecosystems on Clear & Deep Web. (Commercial) - [Cobalt Attack Surface Monitoring](https://cybersectools.com/tools/cobalt-attack-surface-monitoring): Continuous external asset discovery and monitoring with daily domain scans. (Commercial) - [Vulneri ASM](https://cybersectools.com/tools/vulneri-asm-attack-surface-management): ASM platform for continuous discovery and risk validation of internet-exposed assets. (Commercial) - [DNS Assistant](https://cybersectools.com/tools/dns-assistant): DNS posture mgmt platform for real-time DNS & WHOIS change monitoring. (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) - [Driftnet Explore](https://cybersectools.com/tools/driftnet-explore): Internet-wide scanning platform for discovering exposed devices, services (Commercial) - [ConnectSecure Attack Surface Scanning](https://cybersectools.com/tools/connectsecure-attack-surface-scanning): External attack surface scanning for MSPs to identify vulnerabilities (Commercial) - [v6Protect Trusted Third Party Security Service](https://cybersectools.com/tools/v6protect-trusted-third-party-security-service): Independent security scoring and attestation for third-party managed web apps (Commercial) - [Outpost24 External Attack Surface Management](https://cybersectools.com/tools/outpost24-external-attack-surface-management): Cloud platform for continuous visibility & mgmt of external attack surfaces (Commercial) - [StrikeOne Attack Surfa](https://cybersectools.com/tools/strikeone-attack-surfa): AI-powered attack surface management platform for cybersecurity monitoring (Commercial) ## Alternatives to each of these [ctlogs.dev alternatives](https://cybersectools.com/alternatives/ctlogsdev) · [MGM Security Partners recon me alternatives](https://cybersectools.com/alternatives/mgm-security-partners-recon-me) · [DDactic Attack Surface Discovery alternatives](https://cybersectools.com/alternatives/ddactic-attack-surface-discovery) · [SurfaceDiff alternatives](https://cybersectools.com/alternatives/surfacediff) · [Attack Surface Scan alternatives](https://cybersectools.com/alternatives/attack-surface-scan) · [Cylana EASM alternatives](https://cybersectools.com/alternatives/cylana-easm) · [TRaViS alternatives](https://cybersectools.com/alternatives/travis) · [ThreatDefence Integrated ASM alternatives](https://cybersectools.com/alternatives/threatdefence-integrated-asm) · [SOC Radar Attack Surface Management alternatives](https://cybersectools.com/alternatives/soc-radar-attack-surface-management) · [Detectify Platform alternatives](https://cybersectools.com/alternatives/detectify-platform) · [Muscope|Risk - Attack Perimeter alternatives](https://cybersectools.com/alternatives/muscopeorrisk-attack-perimeter) · [Attaxion alternatives](https://cybersectools.com/alternatives/attaxion) ## Compare crt.sh with - [crt.sh vs ctlogs.dev](https://cybersectools.com/compare/crt-sh-vs-ctlogsdev) - [crt.sh vs MGM Security Partners recon me](https://cybersectools.com/compare/crt-sh-vs-mgm-security-partners-recon-me) - [crt.sh vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/crt-sh-vs-ddactic-attack-surface-discovery) - [crt.sh vs SurfaceDiff](https://cybersectools.com/compare/crt-sh-vs-surfacediff) - [crt.sh vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-crt-sh) - [crt.sh vs Cylana EASM](https://cybersectools.com/compare/crt-sh-vs-cylana-easm) - [crt.sh vs TRaViS](https://cybersectools.com/compare/crt-sh-vs-travis) - [crt.sh vs ThreatDefence Integrated ASM](https://cybersectools.com/compare/crt-sh-vs-threatdefence-integrated-asm) ## crt.sh Alternatives FAQ ### What are the closest alternatives to crt.sh? The closest matches to crt.sh by shared tags and NIST CSF 2.0 coverage are ctlogs.dev, MGM Security Partners recon me, DDactic Attack Surface Discovery, SurfaceDiff, and Attack Surface Scan. All of them are External Attack Surface Management products. ### How many alternatives to crt.sh are available? This page shows 45 alternatives to crt.sh, 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 crt.sh free or commercial? crt.sh 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. ### What type of solution is crt.sh? crt.sh is a External Attack Surface Management product in the Exposure & Vulnerability Management category. You can compare it with the 45 other External Attack Surface Management products on this page. --- Source: https://cybersectools.com/alternatives/crt-sh 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 crt.sh 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