Intruder is described as 'Security monitoring platform for internet-facing systems' and is a vulnerability scanner in the security & privacy category. There are more than 50 alternatives to Intruder, not only websites but also apps for a variety of platforms, including SaaS, Windows, Linux and Mac apps. The best Intruder alternative is Shodan, which is free. Other great sites and apps similar to Intruder are Burp Suite, OpenVAS, Nessus and Zed Attack Proxy (ZAP).
Network Hotfix Scanner is a free advanced hotfix check utility that scans network computers for missing hotfixes and patches, and helps you download and install them. NetHotfixScanner gives you a quick look at the hotfixes and patches installed or missed on any remote computer...
United States
Mister Scanner tests for thousands of security loopholes and sends you weekly security reports generated after testing the site for more than a thousand security problems that hackers use today.
Stop breaches before they happen. RogueSight protects your Web Applications and APIs with continuous scanning, actionable insights and clear remediation guidance.
Estonia
EU
Attack Surface Monitor discovers and tracks what your organisation exposes to the internet, from a server you control. It ships as a single Go binary with SQLite - no database server, no agents, no telemetry.
Mageni provides a free, open-source and enterprise-ready cybersecurity vulnerability management solution.
United States
Serbia
ScanLabsAI is an AI-powered website vulnerability scanner built for agencies, MSPs and development teams responsible for security across many client sites.
Improve your authentication security for your linux servers with mutual TLS (mTLS). WoTT automatically rotates private keys with our public key infrastructure (PKI) and lets you seamlessly and easily manage certificates at scale.
United Kingdom
Continuous security platform providing external infrastructure, web app, and repository vulnerability scanning using open-source engines with SAST, network, and port assessments, findings grouped by severity, automated workflow integration, unlimited users, and fast setup.
United Arab Emirates
Scan all 65,535 TCP ports daily, not just the top 1,000. NoxScan uses eBPF, masscan, ZGrab2, Nuclei, and AI to discover your external attack surface, reduce false positives, map CVEs, and generate SOC 2/ISO 27001-ready reports. From €10/mo. 30-day free trial.
CyprusEU
Scan your APIs for prompt injection and 12 security checks in less than a minute, MCP, CLI and GH Action ready to CI/DI integration.
Mexico
Kayvrn is an outside-in security-monitoring platform for businesses that need to understand what an attacker can see from the internet. Enter a domain and Kayvrn runs 57 automated external checks across email security, websites, DNS, cloud services, exposed APIs and related...
United Kingdom
