SAINT is a commercial vulnerability assessment tool. Like Nessus, it used to be free and open source but is now a commercial product. Unlike Nexpose, and QualysGuard, SAINT runs on Linux and Mac OS X. In fact, SAINT is one of the few scanner vendors that don't support (run on) Windows at all.
For downloads and more information,
visit the SAINT homepage.
The summary of SAINT makes the curious statement that "SAINT is one of the few scanner vendors that don't support [MS] Windows at all". I'd like to contribute a clarification to that: SAINT certainly does scan for Windows vulnerabilities, and in addition to the regular addition of MS Windows vulnerability checks, a SAINT update is generally available each month 24 to 36 hours after Microsoft releases its "Patch Tuesday" bulletins.
Perhaps the original statement was observing that the SAINT scanner itself doesn't come in a native-Windows version. In practice, that's rarely a limitation. Even if a network has no Linux, Mac OS X, or BSD hosts at all, SAINT can be run from a bootable USB memory stick or as a virtual machine within an MS Windows host. Folks who think of themselves as running "an all-Windows shop" are using SAINT all the time.
[Moderator note: We've updated the description text to clarify that we mean SAINT doesn't run on Windows. Cheers.]
Update: The latest version of SAINT is 7.11.4, released 2011 December 16. Maintenance versions including the latest vulnerability checks are generally released twice a week, while new feature versions are released approximately every two months.
As one of the SAINT developers, I'm not including a star-rating. :)
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