Best platform for hosting and editing collaborative data sets?

What is the best way to set up a data set which can be used collaboratively, so that multiple people can edit and add data? I have started the hospital infrastructure challenge, but may experience with collaborative data collection is very limited. Any recommendations? I was thinking of Google docs, but maybe there is better way to do this. Needs to be „view only“ for public and „editable“ for registered and approved users. TIA

@fkrauer thank you again for raising the questions here. We started OpenRefine, moved to R and GitHub, and are now preparing a Data Package which should make our work compatible with multiple environments, allowing flexible contributions of data - including a simple crowdsourcing form. If people have other suggestions, by all means please share them here.