TYDAC operates various geoportals as a public service:

• www.mapplus.ch: mapplus alps, a comprehensive collection of geoinformation about Switzerland and the alpine region
• eur.mapplus.ch: mapplus europe, refined OpenStreetMap data on Europe
• hike.mapplus.ch: not only hiking, also many other data about outdoor sports
• MAP+ 3D: to get an idea of hikes in 3D ...

These portals are more for professional use:

• MAP+ geo.admin: almost all federal geo web services combined in one portal, with search function.
• NODI Switzerland: WebGIS with a comprehensive collection of freely available geodata
• NODI Bern: You won't find more geodata about Bern anywhere ...
• NODI Zurich: Free geodata about the canton of Zurich