PSDates provides you all the tools you need when working with dates and times in PowerShell. It contains function to help you find specific date formats, get certain dates based on other dates (first/last day of the month or year, patch Tuesday, etc). I also has functions for working with timezones, unix time, WMI time, crontabs.

This PowerShell module contains functions for managing WMI Namespaces, Classes and Instances.

Module to manage WMI Filter

Windows WMI query toolkit — hardware enumeration, software inventory, system configuration queries, and WMI class explorer

WMI persistence detection toolkit — event subscriptions, consumer bindings, suspicious WMI activity, and backdoor hunting