Data For Good community/opensource project?

Hello all,

Do you know any Data For Good community or open source project you found significant and want to share? One that solves an environmental problem, health, conservation, … I want to involve in

I currently live in France and they have a great data4good community Unfortunately, it is a very french community and I’m interested in an English-speaking one.

Story: working on technology alone sometimes makes me feel tired and lose motivation. Learning a new technique, participating in a competition, all are stimulating. But after a while, once finished, I feel unbalanced.