Autodesk EAGLE

Our free DesignSpark PCB is here to help your company explore more design options, leading to increased innovation. At the core of this unique software is a powerful software engine that enables you to capture schematics and design PCB boards and layouts. Our range of free-of-charge design tools and resources take your brightest ideas all the way through to final production. Whether you're looking for a design alone tool, a range of technical information, a complete design ecosystem, our complete suite can be integrated seamlessly into your existing design workflow. Be free when creating your schematic, there is no limitation on your schematic size or number of your schematic sheets. Feel free to use as many layers as you need on your next PCB design. There are no limits on the maximum number of nodes or pads and no restriction on the number of connections. The maximum size your PCB can be is 1m X 1m.

With the schematic editor you can create your design without limit, there are no paywalls to unlock features. An official library for schematic symbols and a built-in schematic symbol editor help you get started quickly with your designs. Make professional PCB layouts with up to 32 copper layers. KiCad now has a push and shove router which is capable of routing differential pairs and interactively tuning trace lengths. KiCad includes a 3D viewer which you can use to inspect your design in an interactive canvas. You can rotate and pan around to inspect details that are difficult to inspect on a 2D view. Multiple rendering options allow you to modify the aesthetic appearance of the board or to hide and show features for easier inspection. KiCad’s schematic capture is efficient, with all the tools you can expect for such a task. The interface focuses on productivity. There are no complexity limits, as large designs can be divided into hierarchical subsheets.