The GWAS Catalog is an open source project and code is available in the project's github repository (https://github.com/EBISPOT/goci). Curated data are available from the query interface (https://www.ebi.ac.uk/gwas/) and download files from https://www.ebi.ac.uk/gwas/downloads. APIs for the summary statistics data (http://www.ebi.ac.uk/gwas/summary-statistics/api/) and the curated data (https://www.ebi.ac.uk/gwas/docs/programmatic-access) provide programmatic access to all the Catalog's data. The Catalog's GUI also provides access to SS https://www.ebi.ac.uk/gwas/downloads/summary-statistics. The Ontology Cross Reference Service (OXO) is available from https://www.ebi.ac.uk/spot/oxo/ and the Zooma annotation-ontology matching tool from https://www.ebi.ac.uk/spot/zooma/.