Top picks: crt.sh, Findomain, assetfinder — plus 45 more compared.
Attack SurfaceEvaluating Amass alternatives comes down to matching Attack Surface capabilities to your environment, integrations, and budget rather than chasing feature parity. The options below are compared on what actually drives a switch: coverage, deployment fit, pricing, and real reviews from security teams. Independent and vendor-neutral: we never sell rankings.
Amass is a free External Attack Surface Management tool. Security professionals most commonly compare it with crt.sh, Findomain, assetfinder, ScanCannon, and Detectify Platform. All 48 alternatives are matched by shared capabilities, tags, and NIST CSF 2.0 coverage.
A closer look at the 8 most relevant alternatives and competitors to Amass, including their key features and shared capabilities.
Bash script for subdomain enumeration via crt.sh certificate transparency logs.
Shares 5 capabilities with Amass: Reconnaissance, Open Source, Network Reconnaissance, DNS Security +1 more
A domain reconnaissance tool that automates subdomain discovery, port scanning, and monitoring with support for multiple data sources and notification integrations.
Shares 3 capabilities with Amass: Reconnaissance, Network Reconnaissance, Subdomain Enumeration
A command-line tool for discovering domains and subdomains related to a target domain during reconnaissance activities.
Shares 3 capabilities with Amass: Reconnaissance, Network Reconnaissance, Subdomain Enumeration
A Python-based tool for external attack surface discovery and reconnaissance across large-scale networks, focusing on IP address and subdomain enumeration.
Shares 3 capabilities with Amass: Reconnaissance, DNS Security, Subdomain Enumeration
Platform for external attack surface management and application security testing
Monitors internet-facing subdomains for vulnerabilities and misconfigurations
Maps external attack surface including assets, dark web exposure, and leaks.
AI-powered EASM platform for digital asset discovery and monitoring.
Bash script for subdomain enumeration via crt.sh certificate transparency logs.
A domain reconnaissance tool that automates subdomain discovery, port scanning, and monitoring with support for multiple data sources and notification integrations.
A command-line tool for discovering domains and subdomains related to a target domain during reconnaissance activities.
A Python-based tool for external attack surface discovery and reconnaissance across large-scale networks, focusing on IP address and subdomain enumeration.
Platform for external attack surface management and application security testing
Monitors internet-facing subdomains for vulnerabilities and misconfigurations
Maps external attack surface including assets, dark web exposure, and leaks.
AI-powered EASM platform for digital asset discovery and monitoring.
EASM platform for continuous discovery and risk assessment of external assets.
ASM platform monitoring external attack surface, dark web leaks & 3rd-party risks.
Domain exposure monitoring tool for leaked creds, subdomains & dark web data.
AI-enhanced EASM platform for external attack surface discovery and monitoring.
FestIn discovers open S3 buckets associated with a domain using crawling and DNS reconnaissance techniques.
Python utility for testing the existence of domain names under different TLDs to find malicious subdomains.
A full-featured reconnaissance framework for web-based reconnaissance with a modular design.
A multi-cloud DNS security tool that detects dangling DNS records and potential subdomain takeover vulnerabilities by scanning cloud infrastructure and DNS zones.
A powerful enumeration tool for discovering assets and subdomains.
A high-performance DNS stub resolver for bulk lookups and reconnaissance (subdomain enumeration)
A script to extract subdomains/emails for a given domain using SSL/TLS certificate dataset on Censys.
An automation framework that runs multiple open-source subdomain bruteforcing tools in parallel using Docker Compose and custom wordlists.
A subdomain scan tool that helps you find subdomains of a given domain.
A tool to identify potential subdomain takeovers by checking if a CNAME record resolves to the scope address.
A tool for taking a list of resolved subdomains and outputting any corresponding CNAMES en masse.
ASM platform that scans external attack surfaces hourly for vulnerabilities
Sn1per Professional 2026: automated penetration testing & attack surface management
Internet intelligence platform for asset discovery and attack surface mapping
SOCRadar DNS Monitoring provides real-time monitoring of DNS infrastructure with automated discovery, record change alerts, and detection of DNS-based security threats.
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
Active attack surface mgmt solution for discovering & remediating unknown risks
DNS security posture management across multicloud and on-prem environments
Discovers and inventories internet-facing assets including subdomains, IPs, and apps.
Customizable ASM platform for asset discovery, monitoring, and enrichment
Attack surface management platform for discovering and securing exposed assets
External attack surface monitoring with dark web intelligence and scanning
Automated digital asset discovery and monitoring for external attack surface
External attack surface management platform for asset discovery and monitoring
External attack surface mapping service to discover exposed digital assets
External attack surface scanning for MSPs to identify vulnerabilities
OSINT tool for mapping & monitoring risk ecosystems on Clear & Deep Web.
Continuous external asset discovery and monitoring with daily domain scans.
Passive pre-sale domain diagnostic tool for vCISOs, MSPs & MSSPs.
ASM platform for continuous discovery and risk validation of internet-exposed assets.
Agentless EASM platform for asset discovery, exposure mgmt & risk reduction.
Curated Google dork search tool for OSINT and web reconnaissance.
ZoomEye is an advanced cyberspace search engine that provides detailed information on cyberspace assets, including server software and version information, for cybersecurity experts, researchers, and enterprises.
Explore the top million websites, ranked by referring subnets, and gain insights into online influence and popularity.
FullHunt is a next-generation attack surface security platform that enables companies to discover, monitor, and secure their external attack surfaces.
Common questions security professionals ask when evaluating alternatives and competitors to Amass.
The most popular alternatives to Amass include crt.sh, Findomain, assetfinder, ScanCannon, and Detectify Platform. These External Attack Surface Management tools offer similar capabilities and are frequently compared by security professionals evaluating their options.
There are 48 alternatives to Amass listed on CybersecTools, all within the External Attack Surface Management category. Each alternative is matched based on shared capabilities, tags, and NIST CSF coverage areas.
Amass is a free External Attack Surface Management tool. You can use it at no cost. Both free and commercial alternatives are available for comparison.
Amass is a External Attack Surface Management tool within the broader Attack Surface category. It is used by security professionals for external attack surface management capabilities and can be compared against 48 similar tools.
