Knowledge-Graph-UI (KG-UI) is an open-source web-based user interface built for KGs stored in Neo4j. The UI features Cypher queries for viewing immediate neighbors as well as shortest paths between two entities. Additionally, the API can be extended to add other functions such as enrichment analysis, and specialized queries. Example implementation:

GeneSetCart is an interactive web-based platform that enables investigators to gather gene sets from various sources; augment these sets with gene-gene co-expression correlations and protein-protein interactions; perform set operations on these sets such as union, consensus, and intersection; and visualize and analyze these gene sets.