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Subfinder is a free Security Scanning tool. Security professionals most commonly compare it with RoboShadow OWASP ZAP Vulnerability Scanner. All 111 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 Subfinder, including their key features and shared capabilities.
Web app & network vulnerability scanner integrating OWASP ZAP, Shodan & Nmap
Android app for scanning networks to identify security vulnerabilities
Second-order subdomain takeover scanner
A tool for testing subdomain takeover possibilities at a mass scale.
AI-powered automated vuln scanning for apps, APIs, domains, and cloud
Ecommerce malware & vulnerability scanner for Magento, Adobe Commerce & more
Tests leaked/stolen credentials against attack surfaces to identify exposures
Scans repositories for exposed secrets, API keys, and credentials for bug bounty
Web app & network vulnerability scanner integrating OWASP ZAP, Shodan & Nmap
Android app for scanning networks to identify security vulnerabilities
AI-powered automated vuln scanning for apps, APIs, domains, and cloud
Ecommerce malware & vulnerability scanner for Magento, Adobe Commerce & more
Tests leaked/stolen credentials against attack surfaces to identify exposures
Scans repositories for exposed secrets, API keys, and credentials for bug bounty
Scans artifacts across SDLC for vulnerabilities, malware, secrets & misconfigs
AI-powered vulnerability scanner for web apps and APIs
Website malware scanner with remote & server-side scanning capabilities
Infrastructure vulnerability scanner for networks, data centers, and cloud
CMS security scanner with DAST capabilities for web apps and infrastructure
WordPress vulnerability scanner that detects security issues and malware
Automated patch management solution for enterprise systems
External server vulnerability scanning for CVEs, patches, and misconfigurations
Automated scanner for SQL injection and web app vulnerabilities
XSS vulnerability scanner for web apps and APIs with automated scanning
Automated active security testing platform for external attack surfaces
Automated web vulnerability scanner for SQLi, XSS, and other web app flaws
Offensive security platform for attack surface discovery and risk management
Agent-based server security monitoring with vulnerability and compliance scanning
Automated patch management software for fixing software vulnerabilities
AI-powered vulnerability intelligence database with real-time threat context
Cloud-based network assessment tool with automated scanning and reporting
Vulnerability scanner using templates to scan apps, cloud, and networks
Website security scanning and backup service for personal sites and blogs
AI-driven vulnerability triage that reduces false positives & prioritizes fixes
Automated OS patching for Windows and Mac systems with scheduling
PCI DSS compliance scanning solution for payment card data systems
Checks device config settings against standards to detect misconfigurations
IaC security scanner with 500+ policies for cloud infrastructure misconfigurations
Enterprise secrets scanning tool for SDLC with continuous monitoring & remediation
Scans embedded Linux systems for security design vulnerabilities
External vulnerability scanning tool for websites and web applications
AI-powered smart contract vulnerability scanner for Solidity code
Smart contract audit service combining AI scanning and manual code review
PCI DSS-certified ASV scanning service for payment card compliance.
Proprietary Python vulnerability DB with AI detection & expert verification.
Automated web scanner detecting vulnerabilities and HTTP security headers
A Python script that scans file systems to identify hardcoded credentials
Web and email security scanner that checks 16 critical security points in 60 seconds
AI-powered platform for SSL/TLS security testing and compliance assessment
AI-powered web security testing platform for vulnerability and compliance scanning
Open source vulnerability & IaC scanner for containers & cloud native apps
Checks SSL certificate expiry dates and sends email notifications
WordPress plugin for website security scanning via the Guardian360 API.
Nmap is an essential network scanning tool used for network security auditing and status monitoring.
S3Scanner is an open-source tool that scans S3 buckets across S3-compatible APIs to identify misconfigurations and security vulnerabilities.
A Ruby script that scans networks for vulnerable third-party web applications and front-ends with known exploitable security flaws.
Fast, smart, effective port scanner with extensive extendability and adaptive learning.
A Node.js tool that analyzes HTTP security headers on websites to identify missing or problematic security configurations.
A next-generation network scanner for identifying security configuration weaknesses in devices like routers, firewalls, and switches.
A tool for SSH server auditing with comprehensive analysis capabilities.
CryptoLyzer is a cryptographic protocol analyzer that examines TLS, SSL, SSH, and DNSSEC server implementations with fingerprinting capabilities and multiple output formats.
testssl.sh is a free command line tool for checking server's TLS/SSL configurations with clear and machine-readable output.
ssh-audit is a Python-based tool for auditing SSH server and client configurations to identify security weaknesses and ensure compliance with best practices.
A command-line tool that scans websites to detect publicly known security vulnerabilities in frontend JavaScript libraries using Snyk's vulnerability database.
SSLyze is a fast and powerful SSL/TLS scanning tool and Python library with a focus on speed, reliability, and ease of integration.
Mass IP port scanner for Internet-scale scanning with high speed and flexibility.
A next-generation web scanner that identifies websites and recognizes web technologies, including content management systems, blogging platforms, and more.
WordPress security scanner for identifying vulnerabilities in WordPress websites.
Find leaked credentials by scanning repositories for high entropy strings.
Dufflebag searches through public AWS EBS snapshots to identify accidentally exposed secrets and sensitive information.
A tool for automated security scanning of web applications and manual penetration testing.
A tool that automatically audits website security by crawling an entire website and identifying vulnerabilities
A hosted web application security testing tool that enables security researchers to register, activate their accounts, and scan web applications for vulnerabilities.
A fast and reliable port scanner written in Go, designed for attack surface discovery in bug bounties and penetration testing.
A CLI tool that enhances Nmap with 31 modules containing 459 scan profiles for streamlined network reconnaissance and security assessments.
A fast and multi-purpose HTTP toolkit for sending HTTP requests and parsing responses
FingerprintX is a standalone utility for service discovery on open ports.
DirSearch is a simple tool for finding files and directories on a web server.
A JavaScript scanner built in PHP for scraping URLs and other information.
ParamPamPam is an open-source tool that detects and exploits web application vulnerabilities using fuzzing, SQL injection, and XSS techniques.
A Python-based command-line tool that scans websites for CORS misconfigurations by analyzing HTTP response headers to identify potential security vulnerabilities.
A security scanner that identifies Cross-Origin Resource Sharing (CORS) misconfigurations in web applications to detect potential vulnerabilities.
A multi-threaded scanner for identifying CORS flaws and misconfigurations
CorsMe is a specialized scanner that identifies Cross-Origin Resource Sharing (CORS) misconfigurations in web applications and provides remediation recommendations.
Command line tool for testing CRLF injection on a list of domains.
A security analysis tool that detects and analyzes open redirection vulnerabilities in web applications.
A command-line script that tests multiple domains from a list for open redirect vulnerabilities and reports findings.
A smart SSRF scanner using different methods like parameter brute forcing in post and get requests.
A better version of my xssfinder tool that scans for different types of XSS on a list of URLs.
A simple XSS scanner tool for identifying Cross-Site Scripting vulnerabilities
A specialized scanner that detects XSS vulnerabilities in older versions of Swagger-ui implementations.
A command-line tool that scans textual data and Git history to identify and locate secrets, API keys, passwords, and other sensitive information.
A Python tool that tests multiple AWS S3 buckets for security misconfigurations including directory listing and upload permissions.
A security tool for discovering S3 bucket references in web content and testing buckets for misconfigurations.
S3cario is an AWS S3 bucket security testing tool that validates permissions and identifies potential vulnerabilities through scenario simulation.
A centralized dashboard for running and scheduling WordPress scans powered by wpscan utility.
WPRecon is a tool for recognizing vulnerabilities and blackbox information for WordPress.
A python open source CMS scanner that automates the process of detecting security flaws of the most popular CMSs.
A free and open-source tool for identifying vulnerabilities in Joomla-based websites.
A vulnerability scanner that helps you identify and fix vulnerabilities in your code
BlackWidow is a Python-based web application scanner that combines OSINT gathering with automated fuzzing to identify OWASP vulnerabilities in target websites.
An automated reconnaissance tool that crawls domains to discover URLs and scan for exposed secrets, API keys, and sensitive files during security assessments.
Grype is a vulnerability scanner for container images and filesystems that scans for known vulnerabilities and supports various image formats.
Common questions security professionals ask when evaluating alternatives and competitors to Subfinder.
The most popular alternatives to Subfinder include RoboShadow OWASP ZAP Vulnerability Scanner, RoboShadow Mobile Network Scanner, second-order, takeover, and ArmourZero Automated Vulnerability Management. These Security Scanning tools offer similar capabilities and are frequently compared by security professionals evaluating their options.
