Check realtime and continuously for outdated web software on your server. Delivered by mail and an easy to use dashboard and get notified if PHP, Apache, cPanel, Wordpress, Drupal and many more become outdated.

The best free Vulnerability Scanner alternative to Nessus is SiteOne Crawler, which is also Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Nessus and many of them are free Vulnerability Scanners so hopefully you can find a suitable replacement. Other interesting free Vulnerability Scanner alternatives to Nessus are Metasploit, OpenVAS, PhoneSploit Pro and CVEFinder.
Check realtime and continuously for outdated web software on your server. Delivered by mail and an easy to use dashboard and get notified if PHP, Apache, cPanel, Wordpress, Drupal and many more become outdated.

Strobes is an integrated cybersecurity platform that combines Attack Surface Management, Penetration Testing-as-a-service, and Risk-Based Vulnerability Management to continuously manage your threat exposure.



A general purpose network security scanner with an extensible plugin system for detecting high severity vulnerabilities with high confidence.

HostedScan provides 24x7 alerts and detection for security vulnerabilities. Industry-standard, open-source, vulnerability scans. Automated alerts when something changes. Manage target list manually or import automatically from providers, such as AWS, DigitalOcean, and Linode...




This vulnerability scanner for the Windows WorkStations et Servers gives you all the actions to enforce security of your Windows operating Systems.
Vulners is a high-quality correlated database of software vulnerabilities. Users can create a custom VM solution using our consolidated database through API, multiple vulnerability scanners, plugins, and many other security tools and integrations.



The goal of cvechecker is to report about possible vulnerabilities on your system, by scanning the installed software and matching the results with the CVE database. Indeed, this is not a bullet-proof method and you will most likely have many false positives (vulnerability is...
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...

Lead of security scanners, meticulously tailored to pinpoint and evaluate the security vulnerabilities in WordPress websites.
Mageni provides a free, open-source and enterprise-ready cybersecurity vulnerability management solution.



Unified application security platform — 12 scanners including SAST, DAST, SCA, and pen-testing in one on-premise deployment. Replaces your entire AppSec stack.