• Dataset that are currently freely available here
• From March 1st, 2021 almost all swisstopo data is freely available, downloads here

Available Data:

• Digital National Maps: Swiss Map Raster, Swiss Map Vector, Swiss Map Web, Digital Historical Maps, General Map and Municipality Map of Switzerland
• Images: SWISSIMAGE, Aerial Photographs, Terrestrial images
• Landscape Models: Contains the names, perimeters and post codes of all localities in Switzerland and the Principality of Liechtenstein.
• Official directory of towns and cities: swissTLM3D, swissTLMRegio, swissBUILDINGS3D 2.0, swissBOUNDARIES3D, swissNAMES3D
• Digital Elevation Models: swissALTI3D, swissSURFACE3D, swissSURFACE3D Raster, swissBATHY3D, DHM25
• Geological Geodata
• Aeronautical Maps

The download options are very well implemented, congratulations! Practically everything can be downloaded, including very large amounts of data. In the latter case, a CSV file with all download links can be generated so that swiss wide SWISSIMAGE 0.1m can also be downloaded!