Crowd-sourced knowledge graph — broad biological, chemical, and biomedical entity coverage with cross-references to most major databases.

NCBI PubChem compounds, substances, bioassays, and references served via QLever — fast lookup for chemical structures and identifiers.

Curated protein sequence and function database (Swiss-Prot + TrEMBL) with disease, GO, and cross-database annotations.

EBI ChEMBL bioactivity database — drugs, targets, assays, and standard activity measurements. Public mirror is intermittently slow.

BioBricks-curated knowledge graph — 165M triples across 53 source datasets (ctdbase, tox21, ecotox, consensus-bioactivity, coconut, bindingdb, chembl-smiles, and more). Served on-prem via Virtuoso on ws4.