De-Google-Ify campaign by Framasoft launched in 2014 (non profit association behind the creation of peertube).

They are proposing alternatives to replace any major online tools.

To avoid the creation of a new centralised instance: Their CHATON (kitten) initiative, a collective to regroup local small hosters and promote their creation, follows several principles (only Foss tools, no tracking , no data transfer…)

https://www.chatons.org/en

If duplicated , I will edit.