KiCad PCB Design Software | Free EDA Tools for Circuit Boards

KiCad is an open-source EDA tool under GPL license, compatible with Windows, macOS and Linux. It offers an integrated design environment including schematic editing, Electrical Rule Check (ERC), PCB layout, Design Rule Check (DRC), Gerber file generation, 3D model preview and SPICE circuit simulation. Supporting up to 32 copper layers, it features professional functions like push-and-shoot routing and differential pair length matching, with a massive built-in component library and custom footprint support. With advantages of open-source, cross-platform compatibility and complete functionality, KiCad has become a mainstream PCB design tool for engineers, makers and academic teaching, suitable for full-cycle development from simple prototypes to complex industrial products.