ACKNOWLEDGEMENTS.md

Acknowledgements

Ontosphere builds on several open-source projects and libraries whose authors we gratefully acknowledge.

Core components

Component	Authors / Maintainers	Role in Ontosphere
Konclude	Andreas Steigmiller, Thorsten Liebig, Birte Glimm (Institute of Artificial Intelligence, University of Ulm)	OWL 2 DL tableau reasoner (SROIQ(D)), compiled to WebAssembly via rdf-reasoner-konclude. All credit for the reasoning algorithm belongs to Andreas Steigmiller
Reactodia	Dmitry Mouromtsev et al.	Visual graph editor — canvas, authoring, halo, entity search
N3.js	Ruben Verborgh, Ruben Taelman	In-memory RDF store, Turtle/N-Triples/N3 parser and serializer
shacl-engine	Thomas Bergwinkl	SHACL constraint validation engine

Steigmiller, A., Liebig, T., & Glimm, B. (2014). Konclude: System Description. Journal of Web Semantics, 27–28, 78–85. doi:10.1016/j.websem.2014.06.003

Layout and graph algorithms

Component	Role
ELK (elkjs)	Layered, force, stress, and radial graph layout algorithms
Dagre	Directed graph layout (horizontal / vertical)
ngraph.louvain / ngraph.slpa	Community detection for hierarchical clustering (Louvain, Label Propagation)
ml-kmeans	K-Means clustering

RDF and SPARQL

Component	Role
@rdfjs/data-model / @rdfjs/dataset	RDF/JS data model and dataset interfaces
rdf-parse	Multi-format RDF parser (Turtle, JSON-LD, RDF/XML, N-Triples)
sparqljs	SPARQL query parser
Comunica	SPARQL query engine over RDF/JS sources

UI framework

Component	Role
React	UI rendering
Radix UI	Accessible, unstyled UI primitives
Tailwind CSS	Utility-first CSS framework
Vite	Build tool and dev server
Lucide	Icon set
shadcn/ui	Component patterns built on Radix + Tailwind

Institutional support

This work was supported by the Fraunhofer Institute for Mechanics of Materials IWM.