@smallcircles馃 socialcoding.. unless I鈥檓 mistaken there鈥檚 aspects of what you鈥檙e search for that are the basis for ActivityPods, which also allows for bolting on additional where needed. I don鈥檛 think what you鈥檙e looking for is that far from reality https://docs.activitypods.org/guides/create-your-first-social-app/
Thank you. Yes, indeed. As it happens I was just in chat with S茅bastien yesterday. They'll give a presentation at the #Solid Practitioners Meetings on the 5th of March.
#ActivityPods is positioned to bring "app development" to the intersection of the #ActivityPub and #SolidProject ecosystems, and that is very valuable. And also an #OpenStandards focused initiative.
I have revamped the #fediverse delightful lists to de-emphasize app domains and apps that have already established themselves, to highlight the innovative projects that can bring fedi to higher levels. 
@activitypods is on the developer list.. https://delightful.coding.social/delightful-fediverse-development/#application-development
They are well positioned to offer the 'Solution developer' stakeholders an attractive set of tools. And the opportunity is to marriage the best of 2 worlds. Which is at the same time the big challenge, coping with the worst of 2 worlds. The other day I tooted about this here: https://social.coop/@smallcircles/116113963712755122
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