WMI Explorer is described as 'utility intended to provide the ability to browse and view WMI namespaces/classes/instances/properties in a single pane of view and is inspired by the PowerShell based WMI Explorer written by Marc' and is an app. There are three alternatives to WMI Explorer for Windows. The best alternative is WMI Explorer 2017. It's not free, so if you're looking for a free alternative, you could try WMI Tools or Goverlan Free WMI Explorer.
WMI Tools is a free toolkit from AdRem Software designed to access WMI information. It includes views for general info, processes, services, event log, hardware, operating systems and a WMI explorer for defining and using custom WMI queries.
WMIX makes WMI technology accessible to sysadmins and infrastructure engineers. Its GUI builder generates PowerShell, VB, or WQL scripts automatically. Users can browse namespaces, classes, instances, properties in a single pane.