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Open Source OrCAD (All Products) Alternatives

The best open source alternative to OrCAD (All Products) is KiCad. If that doesn't suit you, our users have ranked more than 25 alternatives to OrCAD (All Products) and 12 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to OrCAD (All Products) are Fritzing, QUCS, LibrePCB and gEDA Project.

OrCAD (All Products) alternatives are mainly Circuit Simulators but may also be Electronic Design Automation Tools or CAD Software. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of OrCAD (All Products).
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  • Windows

The Cadence OrCAD product line provides affordable, high-performance PCB design tools that boost productivity for smaller...

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  1. KiCad icon

    KiCad

    • FreeOpen Source
    • Mac
    • Windows
    • Linux

    KiCad is an open source software suite for electronic design automation (EDA) - designing schematics of electronic circuits and printed circuit boards (PCB). KiCad is developed by Jean-Pierre Charras.

    PcbNew - Editor
    Most users think KiCad is a great alternative to OrCAD (All Products).
  2. Fritzing icon

    Fritzing

    • Mac
    • Windows
    • Linux

    to design circuits, as well as so called "layouts", be it PCB or stripboard or breadboard...

    Screenshot


  3. QUCS icon

    QUCS

    • FreeOpen Source
    • Mac
    • Windows
    • Linux

    The Quite Universal Circuit Simulator (QUCS) is an integrated circuit simulator allowing the simulation and graphical presentation of results of large-signal, small-signal and noise behavior in circuits.

    Screenshot
  4. LibrePCB icon

    LibrePCB

    • FreeOpen Source
    • Mac
    • Windows
    • Linux

    LibrePCB is a free EDA software to develop printed circuit boards. It’s currently under heavy development to bring out first stable releases as soon as possible.

    Screenshot
  5. gEDA Project icon

    gEDA Project

    • FreeOpen Source
    • Mac
    • Linux

    The gEDA project has produced and continues working on a full GPL'd suite and toolkit of Electronic Design Automation tools. These tools are used for electrical circuit design, schematic capture, simulation, prototyping, and production.

    gschem


  6. Oregano icon

    Oregano

    • FreeOpen Source
    • Linux

    oregano - An electrical engineering tool for GNOME.

    Screenshot
  7. Circuit Diagram icon

    Circuit Diagram

    • FreeOpen Source
    • Windows
    • Online

    Circuit Diagram is a free application for making electronic circuit diagrams and exporting them as images. Design circuits online in your browser or using the desktop application.

    Screenshot
  8. Ngspice icon

    Ngspice

    • FreeOpen Source
    • Mac
    • Windows
    • Linux

    Ngspice is a mixed-level/mixed-signal circuit simulator. Its code is based on three open source software packages: Spice3f5, Cider1b1 and Xspice. Ngspice is part of gEDA project, a full GPL'd suite of Electronic Design Automation tools.

    ngspice on KDE (Linux) with gschem in background
  9. eSim icon

    eSim

    • FreeOpen Source
    • Windows
    • Linux

    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 .

    eSim main window provides frontend to create projects for drawing schematic,PCB layout and doing circuit simulation.
  10. Qucs-S

    • FreeOpen Source
    • Linux

    Qucs-S is a spin-off of the Qucs cross-platform circuit simulator. "S" letter indicates SPICE. The purpose of the Qucs-S subproject is to use free SPICE circuit simulation kernels with the Qucs GUI.

    Screenshot
Showing 10 of 12 alternatives