Looking for a PKMS

I do a lot of writing and the research to make it happen. I am not a programmer and have no urge to go down that road.

I am looking for something like DevonThink but for Windoze. I am not at all interested in markdown or any other coding stuff in the interface. I need to focus on the content and retrieving that content. The platform needs to be on my machine and not web or cloud based. I need to be able to load images, documents and PDFs into the platform and if possible, search them.

I feel that the majority of PKMSs out there end up being a project on their own with customizing and plug-ins. I just want something that works. I don't need another hobby.

I would appreciate any help in my search.

Thank you