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…)
If duplicated , I will edit.
Nice! Although unfortunately most of the documentation and various tools are in French…