AccessChk is a small, but strong, security utility available for free from Sysinternals. It is a command line utility designed to allow administrators to see exactly what rights a particular group has to a specific resource. This type of functionality may not seem all that helpful. After all, you can look at an Access Control List and tell instantly what permissions a user or group has been assigned. However, AccessChk gives you much more granular results.

Usage: accesschk [-a] [-s][-e][-u][-r][-w][-n][-v][[-k][-p [-f]][-o [-t <object type>]][-c]|[-d]] [username] <file, directory, registry key, process, service, object>

-a Name is a Windows account right. Specify '*' as the name to show all rights assigned to a user
-c Name is a Windows Service e.g. ssdpsrv. Specify '*' as the name to show all services and 'scmanager' to check the security of the Service Control Manager
-d Only process directories
-e Only show explicitly set Integrity Levels (Windows Vista only)
-k Name is a Registry key e.g. hklm\software
-n Show only objects that have no access
-p Name is a process name or PID e.g. cmd.exe (specify '*' as the name to show all processes)
-q Omit banner
-r Show only objects that have read access
-s Recurse
-t Object type filter e.g. "section"
-u Suppress errors
-v Verbose (includes Windows Vista Integrity Level)
-w Show only objects that have write access

The license of this software is Freeware, you can free download and free use this pc access control software.