The layers made available on this website are all served on a map server. Map servers come with many different specifications. It is important that such servers comply with the OGC standards.
This site runs on top of Geonode, PostGIS and Geoserver. GeoServer provides data according to the Web Map Service (WMS) standard and the Web Feature Service (WFS) standard. . It can also GeoServer can provide maps in a variety of output formats.
Read more about how you can use live data from this system using QGIS on this site.