DipTrace 5 Free Full Activated

This is EDA/CAD software for creating schematic diagrams and printed circuit boards. The developers provide a multi-lingual interface and tutorials.

It has four modules: Schematic Capture Editor, PCB Layout Editor with built-in shape-based autoroute and 3D Preview & Export, Component Editor, and Pattern Editor.

This powerful and intuitive software is aimed at professionals who want to create PCB layouts, design schematics, and edit components and patterns. With it, you can build anything from simple logic circuits to highly complex boards, which can view in both plane and 3D form.