pages and plugins

I have installed a number of plugins, mostly to try them out. for some, I had to create pages, for others, pages were auto generated.
Now, I am confused. some of these plugins will not be used, and I would like to get rid of pages that will never be used.

Is there a way to identify which pages go with which plugins? It would be neat if whenever a page is used by a plugin, it was tagged as “belonging” to that plugin.