Is there a tool for comparing two IXPs?

Hi all, I am looking for a tool that compares two Internet Exchange Points, no matter if it is a website or a script.

I'd like that it compares members of that NAPs (e.g. LINX LON1 and LONAP has in common COLT AS8220 but 1&1Versatel AS8881 peers only on LINX).

I know that PeeringDB has APIs but don't know if is there anyone that uses them for this purpose.

Thanks