<pclass="card-text"><ahref="https://covid19beacon.crg.eu">COVID-19 Viral Beacon</a> is a tool to find SARS-CoV-2 variability at genomic, amino acid and motif level. It has been developed as a branch of the GA4GH Beacon standard, as a special use case for testing and demonstration of new features in Beacon v2 (and implicitly of Beacon v1).</p>