System State Analyzer Tool compares two snapshots of a computer taken at different points in time. This allows you to determine what may have changed on a system, either due to a specific issue (i.e. after an application install) or even to compare the difference between two systems.
NOTE: Unless you’re a developer / tester, you’ve probably never heard of this tool - it’s part of the Windows 2008 R2 Logo Software Certification and Windows 2008 R2 Logo Program Software Certification toolkits. (Thanks Tim)
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