Where can I find all of the COM objects that can be created in Powershell?

I found this powershell one-liner script that supposedly lists all COM objects.

gci HKLM:\Software\Classes -ea 0| ? {$_.PSChildName -match '^\w+\.\w+$' -and
(gp "$($_.PSPath)\CLSID" -ea 0)} | ft PSChildName

let us know if it works!