Free software programs of this category are designed for diagnosing and testing problems associated with computer security. And also issues with connected hardware, viewing log messages, etc.
Nmap 7.70 - will you often audit and very much in need of a program that would help you in this task? Then you need a utility Nmap, which is just as effective as other similar programs, but has additional features.
Microsoft Baseline Security Analyzer 2.3 - this program is designed to help users who are engaged in small and medium-sized businesses. It will give you a much improved process control, as well as a variety of convenient functions for what would your business gained momentum.
Event Log Explorer 4.5 - use this program to easily monitor events on your system. Event Log Explorer helps you to keep records of all actions, as well as a convenient solution for analysis, as well as extends the user experience by providing more features.