TWmiQuery executes queries against WMI service. Use it to retrieve almost any computer configuration information. For example: "select * from Win32_Account";
TWmiConnection connects TWmiQuery component to a destination computer.
TWmiProcessControl controls processes running on a local or remote servers;
TWmiStorageInfo obtains variety of information about disks, CDROMs, partitions, tapes etc;
TWmiDiskQuota manages disk quotas under Windows XP or higher;
TWmiOs reports variety of operating system settings on a local or remote computer;
TWmiRegistry reads and writes system registry on local or network computers;
TWmiSystemEvents reacts to the events happening on a local or remote computer;
TWmiMethod executes the methods of WMI objects;
TWmiPerformanceMonitor monitors performance of various parts of operating system;
TWmiDiskKeeper de-fragments and checks for errors the hard drives on a local or remove Server 2003 or Vista computers;