In 1998 Renaud Deraison created The Nessus Project as a free remote security scanner. [2] On October 5 2005, with the release of Nessus 3, the project changed from the GNU General Public …

Dec 29, 2025 · If that doesn't suit you, our users have ranked more than 50 alternatives to Nessus and 13 is open source so hopefully you can find a suitable replacement. Other interesting open source …

Jan 17, 2026 · Tenable Nessus offers an open-source, free version with limited features as Nessus Essentials. With Nessus Essentials, users get a free-to-use vulnerability assessment tool that can …

Dec 12, 2024 · Nessus was started as an open-source project and is now a property of Tenable, Inc., which has constructed a commercial product, using the open-source system as its core. This …

Dec 18, 2021 · It's a free and open source platform used for threat prevention, detection, and response. It protects workloads across on-premises, virtualized, containerized and cloud-based environments.

Nessus is an open-source network vulnerability scanner developed by Tenable, Inc that uses the Common Vulnerabilities and Exposures architecture for easy cross-linking between compliant …

Feb 23, 2024 · Nessus is best for companies that want more of an off-the-shelf vulnerability scanning solution, while the open source OpenVAS is best for organizations that want more customization …

Feb 8, 2026 · There are more than 50 alternatives to Nessus for a variety of platforms, including Web-based, Linux, Windows, SaaS and Mac apps. The best Nessus alternative is SiteOne Crawler, …

Feb 13, 2026 · Cervantes is an open-source, collaborative platform designed specifically for pentesters and red teams. It serves as a comprehensive management tool, streamlining the organization of …

Nessus is built from the ground-up with a deep understanding of how security practitioners work. Every feature in Nessus is designed to make vulnerability assessment simple, easy and intuitive.