TechGuy4u KiCAD Electronics Design Automation Suite (EDA )

Kicad is an open source (GPL) software for the creation of electronic schematic diagrams and printed circuit board artwork. Designed and written by Jean-Pierre Charras, a researcher at LIS (Laboratoire des Images et des Signaux) and a teacher in IUT de Saint Martin d’Hères.(France), in the field of electrical engineering and image processing. Kicad is a set of four softwares and a project manager: Eeschema :Schematic entry. Pcbnew :Board editor. Gerbview :GERBER viewer (photoplotter documents). Cvpcb :footprint selector for components used in the circuit design. Kicad: project manager.

Schematic Capture: 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.
PCB Layout : 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.
3D Viewer: 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.