Free EDA

Basic info

• ✨: Recommended by MA
• 🤔: Looks promising to MA
• EDA Open Source and Free Tools (SemiWiki) ↪
• Comparison of EDA software (Wikipedia) ↪
• Open Circuit Design ↪
• awesome-eda (clin99@github) ↪: Aggregator.
• gplEDA.org ↪
• gEDA Project ↪

Circuit design environments

• Qucs (Qt) ↪: 🤔 Quite Universal Circuit Simulator.
• KiCad EDA ↪: 🤔 A Cross Platform and Open Source Electronics Design Automation Suite.
• GNU Spice GUI ↪
  • Home page: http://users.tpg.com.au/micksw012/gspiceui.html.

Device simulators (TCAD)

• Technology CAD (Wikipedia) ↪
• TCAD Central ↪: Aggregator.
• Charon ↪: Sandia National Laboratories.

Circuit simulators

• List of free electronics circuit simulators (Wikipedia) ↪
• Dynamic simulation systems: Check out section in "modelling" page.
• PSpice (free trial) ↪: OrCAD (part of Cadence Design Systems).
• NI Multisim Student 11 ↪: National Instruments Corp. (NI).
• WinSpice (SPICE) ↪: Port of SPICE3f4 to Win32 systems.
• ngspice (SPICE) ↪: Mixed-mode simulator based on Berkeley SPICE3f5.
• Xyce ↪: Sandia National Laboratories.
• LTspice ↪: Analog Devices (Orig: Linear Technology).
• ACME.jl (Julia) ↪: Analog Circuit Modeling and Emulation for Julia.
  • Source: Department of Signal Processing, Helmut-Schmidt-University.
• CppSim ↪: System-level simulations for mixed-signal systems.

System-level simulation

• Delta Sigma Toolbox (Matlab) ↪: Author: Richard Schreier.
• python-deltasigma (Python) ↪: A port of Richard Schreier's Delta Sigma Toolbox.

Circuit layout/PCB editors

• OrCAD/Allegro Free Physical Viewer ↪: OrCAD (part of Cadence Design Systems).
• Eagle (PCB designer) ↪: (Autodesk).
• LibrePCB ↪
  • Comparison with other EDA tools ↪

Waveform viewers

• GTKWave (Digital waveforms) ↪
  • LXT, LXT2, VZT, FST, and GHW files as well as standard Verilog VCD/EVCD.
• Gaw (Digital waveforms) ↪: Gtk Analog Wave viewer.

Documentation

• inkscapeCircuitSymbols ↪, inkscapeLogicGates ↪: Inkscape plugins that generate circuit symbols of exceptionally high quality.
  • 😕 Symbols are large relative to typical use case in a document (default scale). Is it possible to make them smaller by default?
  • Other interesting plugins: inkscapeDimensions ↪, inkscapeCartesianPlotFunction2D ↪, inkscapeCartesianStemPlot ↪, inkscapePolarAxes2D ↪
  • Not sure why they are not consolidated into fewer packages (ex: plots, circuits, ...) to simplify installation.

Misc tools

• scikit-rf (Python) ↪: Library for network analysis and calibration.

Process Design Kit (PDK)

• SkyWater Open Source PDK ↪: 180nm-130nm hybrid technology (Cypress Semi.).
  • Source: Google/SkyWater Technology Foundry (orig: Cypress Semiconductor).

Information sites

• Designer's Guide ↪: Ken Kundert.
• Frank Wiedmann (Home) ↪.