How to list Denoise as PS filter

I installed Denoise, but cannot find it under Filters in PS. I have the same problem with Gigapixel and AI Sharpen.
I am on a MAC. Please advise.

They should automatically install into Photoshop, but you must have Photoshop closed while installing them and after installation you have to run them at least once as a standalone. Alternatively in the Help menu for each app is an option to install Photoshop plugins. Be aware that Gigapixel doesn’t appear under the Filter menu - it’s under File>Automate.

Also, you need to remove your email address from you heading this is a public forum so anybody can see it.