Nessus project is the world's most popular open-source vulnerability scanner used in over 75,000 organizations world-wide. Many of the world's largest organizations are realizing significant cost savings by using Nessus to audit business-critical enterprise devices and applications.

The "Nessus" Project was started by Renaud Deraison in 1998 to provide to the internet community a free, powerful, up-to-date and easy to use remote security scanner. Nessus is currently rated among the top products of its type throughout the security industry and is endorsed by professional information security organizations such as the SANS Institute. It is estimated that the Nessus scanner is used by 75,000 organizations world-wide.

In 2002, Renaud co-founded Tenable Network Security with Ron Gula, creator of the Dragon Intrusion Detection System and Jack Huffard. Tenable Network Security is the owner, sole developer and licensor for the Nessus Open-Source Scanner source code, the Nessus trademark and the nessus.org domain worldwide. Tenable is privately held and located in Columbia, MD.

Tenable delivers commercial enterprise network security products that perform unique distributed and dedicated vulnerability assessments of computer networks. Tenable offers software products which focus on three areas of security information management:

* Vulnerability Discovery and Management
* Security Event Management; and
* Executive and Technical Communication

"Nessus" features:

Up-to-date security vulnerability database

Remote AND local security

Extremely scalable

Plug-ins

NASL

Smart service recognition

Multiples services

Full SSL support

Non-destructive OR thorough

The biggest user base

Proven maturity