Tool to detect unused route-maps, prefix-lists, ACLs, etc on IOS/NX-OS?

Does anyone know of a tool that can be fed a Cisco config and detect any route-map, policy-maps, prefix-list, ACLs that are configured but not actually applied?

I guess the logic could be a bit difficult based on the variety of ways some of these things could be applied.

I have a vague memory of using a tool with this feature that was along the lines of Cisco's CLI analyzer. I haven't found anything within the Solarwinds suite.

And yes I may be asking because I accidentally removed an important prefix-list during a clean-up change task.....