Open Source Information Switzerland

https://www.ossdirectory.com/ : Directory, Products, Companies

https://www.ch-open.ch/ : Open Source Verein Schweiz

Open Data

https://opendata.ch/ : Community

https://opendata.swiss/de : Open Data Switzerland

https://opentransportdata.swiss/de/ : Open Data public transport Switzerland. The used standards are defined here: https://transportdatamanagement.ch/de/

Software Directories

Open Source Alternative to 300+ proprietary SaaS:

https://www.opensourcealternative.to/

200+ open source alternatives:

https://www.btw.so/open-source-alternatives

https://opensource.builders/

Based on recommendations:

https://alternativeto.net/

Texts with alternatives:

https://opensource.com/alternatives