KiCad

KiCad is a free, open-source electronic design automation (EDA) suite used to design schematics and printed circuit boards (PCBs). It provides a complete workflow from schematic capture through PCB layout to manufacturing outputs, and runs on Linux, Windows, and macOS. KiCad is released under the GNU General Public License, with a global community contributing ongoing development and library content.

The KiCad toolchain comprises several programs that work together. Eeschema handles schematic capture and annotation; Pcbnew performs PCB layout and routing; GerbView lets users view Gerber fabrication files; a 3D viewer displays the assembled board with footprint models. A central library manager organizes symbol and footprint libraries, and users can add third-party or custom libraries. KiCad supports hierarchical schematics, multi-sheet designs, and an interactive router with push-and-shove editing, design rule checks, and electrical rule checks.

Projects can be exported to manufacturing data such as Gerber and Excellon drill files, along with bill of materials. The design files are stored in readable text formats, and KiCad can import and export various file formats to aid interoperability with other tools. The included libraries cover thousands of components and footprints, maintained by volunteers through community contributions.

KiCad has evolved through multiple major releases, expanding cross-platform support, library management, 3D visualization, and collaboration features. It is widely used in education, hobbyist communities, and small to mid-size professional settings due to its cost, openness, and active development.