How can I see all installed third-party components, packages and extensions?

I have many third-party components, packages, and extensions installed on my Delphi. Some of them appear on the splash screen, but not all of them.

A while ago I installed a certain package and IDE extension, but now I can't find it. So that's why I'm wondering if there's a place or a way I can see all of my installed third-party things.

I know if you install something from the GetIt Package Manager, then it's simple. I can just view all installed ones in GetIt, but what if I installed it outside of GetIt.

So my question... How/Where can I see everything that I have installed on my Delphi?

• There is the window menu item "C̲omponent > Install P̲ackages..." which lists all design time packages.
• GExperts has an "Expert Manager" for DLL experts.
• The "Version info" button in Delphi's "H̲elp > A̲bout..." box shows 3rd party DLLs too.