CRISPRCasdb a successor of CRISPRdb containing CRISPR arrays and cas genes from complete genome sequences, and tools to download and query lists of repeats and spacers. - Christine Pourcel; Marie Touchon; Nicolas Villeriot; Jean-Philippe Vernadet; David Couvin; Claire Toffano-Nioche; Gilles Vergnaud (Nucleic Acids Res., 2020)