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!

Use OleView.exe from Microsoft. I think it may come with Visual Studio. If not, you can find it in the Windows SDK. That's a big download; you can either download the whole thing or you could experiment with downloading it piecemeal using the setup.exe installer.

Once in OleView, look under "type libraries". Excel for instance appears under "Microsoft Exel".