Most recent coding open source work was for OpenLibrary.org, which is a super inviting place to jump in and contribute.
But I have been maintaining my awesome list about social enterprises: https://github.com/RayBB/awesome-social-enterprise
I also started a community here for it: https://lemmy.ml/c/socialenterprise
I don't think they're like some grand solution or something but I like the way they move us (less dependence on the rich donating money and more emphasis on helping the community). That being said, there is a lot of "green washing" type organizations that try to use the label without living up to it.