The identification of the CRISPR-Cas system has profoundly transformed genome editing, driving significant progress in various fields of the life sciences. The rapid evolution of CRISPR technology has necessitated the development of specialized bioinformatics tools to support and enhance these innovations. This chapter provides a comprehensive overview of bioinformatics tools developed for genome editing, with a particular focus on plant systems. These tools are essential at every stage of genome editing, from project design to the identification and minimization of off-target effects. Bioinformatics facilitates the selection of target traits and genes, single guide RNA (sgRNA) design sequences, and the optimization of editing constructs. Additionally, bioinformatics tools are crucial for downstream applications such as verifying genome edits, predicting repair outcomes, and analyzing sequencing data. While CRISPR-Cas9 is the primary focus due to its widespread use and efficiency, the chapter also briefly discusses bioinformatics tools for other genome editing technologies. By illustrating the comprehensive role of bioinformatics in genome editing, this chapter underscores its indispensable contribution to the precision and success of modern genetic research.