The best free alternative to OrCAD (All Products) is KiCad, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to OrCAD (All Products) and many of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to OrCAD (All Products) are QUCS (Free, Open Source), LibrePCB (Free, Open Source), Autodesk EAGLE (Free Personal) and LTspice (Free).
With Solve Elec you can : - draw and analyze electrical circuits functioning in direct or alternating current - get literal formulas and values for current intensities and voltages defined in the circuit. - verify circuit related equations. - draw graphs.
PCBWeb is a 100% free Windows desktop CAD application for designing and manufacturing electronics hardware. Features include schematic capture, PCB Layout with gerber output, and Bill of Materials manager.
eSim (previously known as Oscad / FreeEDA) is an open source EDA tool for circuit design, simulation, analysis and PCB design. It is an integrated tool built using open source software such as KiCad and...