Best Cylana EASM Alternatives & Competitors in 2026

Attaxion

Agentless EASM platform for asset discovery, exposure mgmt & risk reduction.

Vulneri ASM

ASM platform for continuous discovery and risk validation of internet-exposed assets.

Threat Surface - Attack Surface Management

EASM platform for continuous discovery and risk assessment of external assets.

ExposeLens

Domain exposure monitoring tool for leaked creds, subdomains & dark web data.

Assetnote Exposure Engine

Continuous exposure detection & verification engine for attack surface mgmt.

ThreatDefence Integrated ASM

ASM platform monitoring external attack surface, dark web leaks & 3rd-party risks.

crt.sh

Bash script for subdomain enumeration via crt.sh certificate transparency logs.

ScanCannon

A Python-based tool for external attack surface discovery and reconnaissance across large-scale networks, focusing on IP address and subdomain enumeration.

Censys Internet Map

Internet intelligence platform for asset discovery and attack surface mapping

Aleph Search Clear

OSINT tool for mapping & monitoring risk ecosystems on Clear & Deep Web.

Qontrol Avant-Vente

Passive pre-sale domain diagnostic tool for vCISOs, MSPs & MSSPs.

crt.guru

External TLS cert monitoring with expiry alerts, vuln scanning & compliance reports.

FestIn

FestIn discovers open S3 buckets associated with a domain using crawling and DNS reconnaissance techniques.

Findomain

A domain reconnaissance tool that automates subdomain discovery, port scanning, and monitoring with support for multiple data sources and notification integrations.

Amass

Amass is an open-source OWASP tool for comprehensive attack surface mapping and asset discovery through domain reconnaissance and subdomain enumeration.

AttackSurfaceMapper

Automate your reconnaissance process with AttackSurfaceMapper, a tool for mapping and analyzing network attack surfaces.

massdns

A high-performance DNS stub resolver for bulk lookups and reconnaissance (subdomain enumeration)

censys-enumeration

A script to extract subdomains/emails for a given domain using SSL/TLS certificate dataset on Censys.

brutesubs

An automation framework that runs multiple open-source subdomain bruteforcing tools in parallel using Docker Compose and custom wordlists.

Knock

A subdomain scan tool that helps you find subdomains of a given domain.

assetfinder

A command-line tool for discovering domains and subdomains related to a target domain during reconnaissance activities.

Assetnote Attack Surface Management Tool

ASM platform that scans external attack surfaces hourly for vulnerabilities

StrikeOne Attack Surfa

AI-powered attack surface management platform for cybersecurity monitoring

Assetnote ASM

External attack surface management platform with continuous asset discovery

CloudSEK Attack Surface Management

External attack surface management platform for discovering digital assets

Matos Automated Attack Surface Management

Automated ASM tool for multi-cloud environments with continuous asset discovery

Palo Alto Networks Cortex Xpanse

Active attack surface mgmt solution for discovering & remediating unknown risks

Detectify Platform

Platform for external attack surface management and application security testing

Detectify Surface Monitoring

Monitors internet-facing subdomains for vulnerabilities and misconfigurations

Halo Security Attack Surface Discovery

Discovers and inventories internet-facing assets including subdomains, IPs, and apps.

Criminal IP Security Scanning Service

Internet-connected asset search engine with vulnerability scanning capabilities

Intruder Discover Attack Surface

Attack surface management platform for discovering and securing exposed assets

Ceeyu Digital Footprint Monitoring

Automated digital asset discovery and monitoring for external attack surface

Zerocopter Recon

External attack surface mapping service to discover exposed digital assets

ConnectSecure Attack Surface Scanning

External attack surface scanning for MSPs to identify vulnerabilities

Cobalt Attack Surface Monitoring

Continuous external asset discovery and monitoring with daily domain scans.

Muscope|Risk - Attack Perimeter

Maps external attack surface including assets, dark web exposure, and leaks.

DorkSearch

Curated Google dork search tool for OSINT and web reconnaissance.

ZoomEye

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.

Majestic Million

Explore the top million websites, ranked by referring subnets, and gain insights into online influence and popularity.

FullHunt

FullHunt is a next-generation attack surface security platform that enables companies to discover, monitor, and secure their external attack surfaces.

Wappalyzer

A technology lookup and lead generation tool that identifies the technology stack of any website and provides features for market research, competitor analysis, and data enrichment.

PublicWWW

A source code search engine for searching alphanumeric snippets, signatures, or keywords in web page HTML, JS, and CSS code.

Cloud_enum

Cloud_enum is a multi-cloud OSINT tool that enumerates publicly accessible resources across AWS, Azure, and Google Cloud platforms for security assessment purposes.

Smogcloud

A Go-based tool for discovering and inventorying internet-facing AWS assets across single or multiple accounts to help maintain comprehensive cloud attack surface visibility.

Sublist3r

Sublist3r is a python tool for enumerating subdomains using OSINT and various search engines.

Censys Python Library

An easy-to-use and lightweight API wrapper for Censys APIs with support for Python 3.8+.

domfind

Python utility for testing the existence of domain names under different TLDs to find malicious subdomains.