Are there any marketing asset management platforms for managing headlines, copy, images, etc?

Looking for something that is a combination of a global repo for all copy assets like homepage headlines, ad copy headlines, descriptions, website content blocks, etc, as well as images, etc. Would be even better if it plugged into various analytics systems so I could see performance of a given piece of content inline. So, for example, if I'm working on ad copy for a google search ad, or a feature block for a landing page, I want a central place where all that stuff lives so I don't start from scratch every time. All the platforms I've found thus far seem to focus exclusively on image management.