Infiltrator Network Security Scanner
Infiltrator is a network security scanner that can quickly audit your network computers for possible vulnerabilities, exploits, and information enumerations. It comes with a built-in database of know vulnerabilities, that can be updated online and allows you to select the items to scan for or to... It can also audit password and security policies, perform HTTP/CGI server auditing, registry auditing In addition, Infiltrator also comes with 18 network utilities for footprinting, scanning, enumerating and gaining access to machines (ping sweep, whois lookups, email tracing, share scanning and...
http://www.infiltration-systems.com/Files/infiltrator.zip - 1Mb - Download - Screenshot

Nsauditor Network Security Auditor
Nsauditor Network Security Auditor is a network security scanner that allows to audit and monitor remote network computers for possible vulnerabilities, checks your network for all potential methods that a hacker might use to attack it. Nsauditor is a complete networking utilities package that... The program also includes real-time network packet filtering and analyzing, remote network performance monitoring, network status monitoring, web proxy scanning, password auditing, intrusion detection system based on security events log analyzer, IP address lookup and more than 45 network tools...
http://www.nsauditor.com/downloads/nsauditor_setup.exe - 5Mb - Download - Screenshot

CI Discovery Network Inventory
Comprehensive network inventory and computer auditing software for help desks and IT departments. No client installation required to audit targeted computers with the Remote module. Extensive hardware, software and system configuration data captured for both workstations and servers. ... Use the Hotfix Detector to ensure that the lastest MS security updates have been installed. ... Schedule audits for ease and consistency of data collection. ... Or run "On Demand" audits with the Remote module available for CI Discovery.
http://www.kemma.com/download/CID/CISetup.exe - 16Mb - Download - Screenshot

xSharez scanner
xSharez scanner is a multithreaded NetBIOS/SMB scanner designed for both network administrators and users interested in the network security issues. This software will help you to solve one of the most serious problems of all modern computer networks - unauthorized data access using NetBIOS/SMB... - Generate advanced HTML and CSV reports and analyze the network security level using this information. ... - Mount shared resources that are found by the program as network drives or simply browse them using Windows Explorer.
http://www.tools-for.net/download/xsharez3demo.exe - 1Mb - Download - Screenshot

Acunetix Web Vulnerability Scanner
Is your website hackable? Audit your website security with Acunetix Web Vulnerability Scanner Hackers are concentrating their efforts on attacking applications in your website: 75% of cyber attacks are launched on shopping carts, forms, login pages, dynamic content etc. ... Firewalls, SSL and locked-down servers are futile against web application hacking Any defense at network security level will provide no protection against web application attacks since they are launched on port 80 - which has to remain open.
http://www.acunetix.com/vulnerability-scanner/vulnerabilityscanner.exe - 6Mb - Download - Screenshot

GFI LANguard Network Security Scanner
GFI LANguard Network Security Scanner (N. S. S. ) is a tool to audit network security and proactively secure it. It is also a complete patch management solution. GFI LANguard N. S. S. scans entire networks from a 'hacker's' perspective, and analyses machines for open ports, shares, security... After it has scanned your network and determined missing patches and service packs - both in the operating system (OS) and in the applications - you can use GFI LANguard N. ... to deploy those service packs and patches network-wide.
http://software.gfi.com/languardnss7.exe - 15Mb - Download - Screenshot

Security Check
SecurityCheck Audit common security vulnerabilities get corrective recommendations and easy remedies for Windows systems. Check & correct unset or blank passwords, prevent unauthorized changes to important system-wide settings and programs. Secure wireless networks & prevent unauthorized access... Reduce or eliminate shared folders, a key security vulnerability. ... Complete desktop security anlaysis. ... Eliminate Guest Accounts an easy access point to all your data.
http://www.security.moonvalley.com/dist/securitycheck.zip - 335Kb - Download - Screenshot

Proactive Password Auditor
Proactive Password Auditor is a password security test tool that's designed to allow Windows NT, Windows 2000, Windows XP and and Windows Server 2003-based systems administrators to identify and close security holes in their networks. Proactive Password Auditor helps secure networks by executing... The software supports a few different methods of obtaining password hashes for further attack/audit: from dump files (generated by 3rd party tools like pwdump/pwdump2/pwdump3), Registry of local computer, binary Registry files (SAM and SYSTEM), memory of local computer, and memory of remote...
http://www.elcomsoft.com/download/ppa.zip - 2Mb - Download - Screenshot

Winalysis
Monitor for changes to files, the registry, users, groups, services, security policies, and more. Archive Event Logs from multiple machines to a central database. Restore files and the registry from snapshots. Schedule jobs to monitor the network for critical changes, optionally generating... Create user-defined audit reports to help find security vulnerabilities and break-in attempts.
http://www.winalysis.com/wnaly310.exe - 3Mb - Download - Screenshot

The Lock XP
The Lock XP provides user audit, access control, Internet and system security for any computer running Windows 95 to Windows XP (with Fast User Switching [also supports Terminal Server Connections]), and now supports Windows Server 2003. The Lock XP is PL-1 compliant to Chapter 8, NISPOM. ... User security data is stored locally or on a shared network folder. ... When used in conjunction with the Lock XP Security Manager, all remote systems may be kept up to date when The Lock XP has been updated on the Security Manager system.
http://www.crashcoursesoftware.com/files/lockxp.zip - 14Mb - Download - Screenshot