ChangingGraph
Connecting information.
Building awareness.
Federated knowledge graph for the Fediverse ActivityPub · C2S · S2S · RDF · SKOS
ChangingGraph is a federated knowledge graph for open, linked data — across products, supply chains, and initiatives. First production deployment: gsund.rocks. Open to further projects that need transparency.
What started as a knowledge graph for food is growing.
Vision
Why does the world need ChangingGraph? What makes federated, linked information different?
Read more →How it works
In plain terms: what is a knowledge graph? And how does it help with informed decisions?
Explore →For Developers
ActivityPub, RDF, SKOS, SPARQL — the technical details for developers and researchers.
Technical details →Open Standards as Foundation
ChangingGraph builds on the core standards of the decentralized web: ActivityPub for federation across the Fediverse — server-to-server and client-to-server, so custom clients can talk to their instance directly. RDF for linked, machine-readable data. SKOS for controlled vocabularies across domains. SPARQL for open graph queries.
This choice is deliberate. Truly connecting information requires standards that are not owned by any single vendor — only then can data flow between projects, be read by humans and machines alike, and avoid ending up in silos.
The technical implementation is documented in the Fediverse Enhancement Proposals (FEPs) that ChangingGraph contributes to the ActivityPub ecosystem.