Is there an "almost always available" service URL for a public Catalog Service (CSW) available anywhere?
I'm keen to test CSW client capabilities without having to configure a CSW server.
bluenet:
http://imosmest.aodn.org.au/geonetwork/srv/en/main.home
and its GetCapabilities:
https://catalogue-imos.aodn.org.au/geonetwork/srv/eng/csw?service=CSW&request=GetCapabilities
You can also see a list of CSW (using pycsw) server deployments at https://github.com/geopython/pycsw/wiki/Live-Deployments