Have you used a 'tagging' app or tool?

I think my users would benefit from quickly adding info to a record (i.e. Contact), by which they could then filter later in a list view. I found Lightning Universal Tagging in the AppExchange, but it uses a custom junction object, which is dynamic and scalable, however, users couldn't filter by it in a list view. So, I was considering building one that would just use a text field or multipicklist for the tags, but with an easy interface (like Lightning Universal Tagging or a LWC) to where they could quickly add/remove tags. This would also allow them to filter in a list view.  

#Sales Cloud  #Service Cloud  #AppExchange

Have you done or seen something like this? Do you have a better solution?