Tool to check for throttling?

With Net Neutrality going down the drain I'd like a GUI tool to test specific protocols and domains for throttling. I can imagine this is fairly difficult as it depends on the server on the end, but must be possible. Anyone know of anything already out there like this?

My imagined use case is to provide push-button testing of connection to Netflix, Youtube, etc to begin collecting data on which ISPs are throttling and what domains/protocols are being affected.