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.
Try to check your WMS with the firefox plug-in - "WMS Inspector" - see github page https://github.com/amercader/WMS-Inspector/wiki
A quick and easy way to do this would be using jsfiddle. You can just load the javascript mapping library of your choice and do a let more than just test the WMS URL.
This is using Leaflet. Just replace the WMS url with your own and click 'Run' http://jsfiddle.net/tmoy0f0g/1/
I use Gaia:
Gaia is a platform designed for advanced geospatial network and SDI needs. Based on the CarbonTools PRO open-geospatial development toolkit, this viewer can access an array of geospatial sources such as the Open Geospatial Consortium (OGC) Web Mapping Service (WMS), Web Map Tile Service (WMTS), Web Coverage Service (WCS), Web Feature Service (WFS), and Filter Encoding (FE), services such as Microsoft Bing Maps, Yahoo! Maps and OpenStreetMap (OSM), as well as file formats such as ESRI Shapefiles, Google Earth KML/KMZ, DXF, MIF, Geography Markup Language (GML) and GML Simple Features (GMLsf).
A new (as of 2023) tool to do this is https://ows.mapserverstudio.net/ (disclaimer I am the author).
OWS Inspector is a JavaScript web application for testing Open Web Service requests (such as WMS) against geospatial servers. It is open source with code available at https://github.com/geographika/ows-inspector
It is unclear whether you are interested in testing whether JMP9 can consume a WMS properly, or whether it can act as a WMS server.
If you want to test if your software can act as a WMS client, you can point it to a service like one of the services at MassGIS: https://wiki.state.ma.us/confluence/display/massgis/Home
If you want to test if your software can act as a WMS Server, you can simply make a WMS request to your software from a Web Browser. Using a desktop client like QGIS would even be easier.
