Best FestIn Alternatives & Competitors in 2026

ctlogs.dev

Fast Certificate Transparency search and JSON API for subdomain reconnaissance.

Threat Surface - Attack Surface Management

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

SurfaceDiff

Continuous external attack surface monitoring that shows what changed between scans.

crt.sh

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

s3viewer

A storage exploration tool that provides unified access to view publicly accessible Amazon S3 buckets, Azure Blob storage, FTP servers, and HTTP directory listings.

S3BucketList

A Chrome extension that automatically detects and lists Amazon S3 buckets while browsing websites.

2tearsinabucket

A tool for enumerating and analyzing Amazon S3 buckets associated with specific targets to identify potential security misconfigurations.

Detectify Surface Monitoring

Monitors internet-facing subdomains for vulnerabilities and misconfigurations

Edgescan Attack Surface Management (ASM)

External attack surface management platform for asset discovery and monitoring

Muscope|Risk - Attack Perimeter

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

Qontrol Avant-Vente

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

Vulneri ASM

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

Cylana EASM

AI-powered EASM platform for digital asset discovery and monitoring.

Attaxion

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

ThreatDefence Integrated ASM

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

TRaViS

AI-enhanced EASM platform for external attack surface discovery and monitoring.

DNS Assistant

DNS posture mgmt platform for real-time DNS & WHOIS change monitoring.

Attack Surface Scan

Agentless external attack surface monitoring with continuous change detection.

Amass

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

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.

CloudBrute

A black-box reconnaissance tool that discovers cloud infrastructure, files, and applications across major cloud providers for security testing purposes.

ScanCannon

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

CloudScraper

CloudScraper is an enumeration tool that discovers cloud storage resources including S3 buckets, Azure blobs, and DigitalOcean Spaces across target environments.

Cyber Exposure Manager

Cyber Exposure Manager: continuous visibility and remediation for external risk

Sn1per Professional 2026

Sn1per Professional 2026: automated penetration testing & attack surface management

Domain Beacon

Provide intelligence about a domain

Assetnote ASM

External attack surface management platform with continuous asset discovery

Censys Internet Map

Internet intelligence platform for asset discovery and attack surface mapping

Intruder Attack Surface Management

Attack surface mgmt platform with vuln scanning and cloud security features

SOC Radar DNS Monitoring

SOCRadar DNS Monitoring provides real-time monitoring of DNS infrastructure with automated discovery, record change alerts, and detection of DNS-based security threats.

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.

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

Akamai DNS Posture Management

DNS security posture management across multicloud and on-prem environments

Siemba EASM

AI-driven EASM platform for discovering and monitoring external-facing assets

CyberXTron ShadowSpot

External attack surface management platform for asset discovery and risk detection

Detectify Platform

Platform for external attack surface management and application security testing

GoSecure Titan® Attack Surface Management

Discovers, monitors, and assesses external attack surface assets continuously.

Trickest ASM - Attack Surface Management

Customizable ASM platform for asset discovery, monitoring, and enrichment

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

MokN Lantern

EASM platform for continuous external attack surface monitoring and detection

Guardz External Footprint

External attack surface monitoring with dark web intelligence and scanning

Strobes Attack Surface Management

Platform for continuous attack surface discovery, monitoring, and remediation

Zerocopter Recon

External attack surface mapping service to discover exposed digital assets