Open source EDA / electronics CAD software for Windows, macOS and Linux. Use schematic capture, create PCB designs and view them in 3D, all forever free.

KiCad is an open-source software suite for creating electronic circuit schematics, printed circuit boards (PCBs), and associated part descriptions. KiCad supports an integrated design workflow in which a schematic and corresponding PCB are designed together, as well as standalone workflows for special uses.

Create PCB layouts with a wide array of tools from both KiCad schematics and third party sources such as EAGLE.

KiCad 还包括一些帮助电路和 PCB 设计的实用程序，包括用于确定电路结构电气特性的 PCB 计算器、用于检查制造文件的 Gerber 查看器、用于可视化成品 PCB 的 3D 查看器以及用于检查电路行为的集成 SPICE 仿真器。

KiCad is an open-source software suite for creating electronic circuit schematics, printed circuit boards (PCBs), and associated part descriptions. KiCad supports an integrated design workflow in which a schematic and corresponding PCB are designed together, as well as standalone workflows for special uses.

Obtaining the KiCad source code. See the install from source code page for instructions.

Documentation for KiCad, the EDA / CAD suite for Windows, macOS, Linux and more.

The KiCad PCB editor supports plugins written in Python that can perform actions on the board being edited. These plugins can be installed using the built-in Plugin and Content Manager (see the KiCad chapter for details) or by placing the plugin files inside the user plugins directory.

KiCad is an open source software suite for Electronic Design Automation (EDA). The programs handle Schematic Capture, and PCB Layout with Gerber and IPC-2581 output. The suite runs on Windows, Linux and macOS and is licensed under GNU GPL v3.

KiCad Getting Started Tutorial. User Forum FAQ. Performing A Circuit Simulation In KiCad. Happy Robot Labs: 3D KiCad Parts Using OpenSCAD and Wings3D. The Quantizer: DAC and PWM KiCad Simulation