software recommendations - Is there a web page where I can test a WMS URL?

I am using JMP 9, which supports WMS maps (as a client), but it doesn't seem to be working now.

Is there a web based, or small install GIS client on which I can test a WMS URL?

[To clarify, I was looking for something that would help me find out the correct querystring parameters to send, as the service I was hoping to use did not specify them]

Thanks

Answer

Try to check your WMS with the firefox plug-in - "WMS Inspector" - https://addons.mozilla.org/en-US/firefox/addon/91406/ (Not working anymore)

Edit: check github page https://github.com/amercader/WMS-Inspector/wiki