Walder offers an easy way to set up a website or Web API on top of decentralized knowledge graphs. Knowledge graphs incorporate data together with the meaning of that data. This makes it possible to combine data from multiple knowledge graphs, even if different, independent parties maintain or host them. Knowledge graphs can be hosted via Solid PODs, SPARQL endpoints, Triple Pattern Fragments interfaces, RDF files, and so on. Using content negotiation, Walder makes the data in these knowledge graphs available to clients via HTML, RDF, and JSON-LD. Users define in a configuration file which data Walder uses and how it processes this data. Find out which APIs are built with Walder here.

Documentation on Github