CRISPRware: a software package for contextual gRNA library design.

We present CRISPRware, an efficient method for generating guide RNA (gRNA) libraries against transcribed, translated, and noncoding regions. CRISPRware leverages next-generation sequencing data to design context-specific gRNAs and can account for genetic variation, which allows allele-specific guide design on a genome-wide scale. As a demonstration of use and to create a publicly available resource, we use CRISPRware to identify and score gRNAs against coding sequences in six model organisms for Cas9 and Cas12A and host these in a publicly available session on the UCSC Genome Browser.