Open Source C Electronic Design Automation (EDA) Software

Ngspice project aims to improve the spice3f5 circuit simulator.

PICSimLab is a realtime emulator of development boards with MPLABX/avr-gdb debugger integration. PICSimLab supports microcontrollers from picsim, simavr, uCsim, qemu-stm32, qemu-esp32, and gpsim. PICSimLab has integration with MPLABX/Arduino IDE for programming the microcontroller's boards. As the purpose of PICSimLab is to emulate real hardware it does not have any source code editing support. For code editing and debugging the same tools used for a real board should be used with PICSimLab, such as MPLABX, Arduino IDE, or VSCode with PlatformIO. PICSimLab supports several devices (spare parts) that can be connected to the boards for simulation. Such as example LEDs and push buttons for simple outputs and inputs and some more complex ones like the ethernet shield w5500 for internet connection or the color graphic display ili9340 with touchscreen. The complete list of parts can be accessed in the documentation. Documentation at https://lcgamboa.github.io/picsimlab_docs/stable/

Gerbv is an open source Gerber file (RS-274X only) viewer. Gerbv lets you load several files on top of each other, do measurements on the displayed image, etc. Besides viewing Gerbers, you may also view Excellon drill files as well as pick-place file

GNUSim8085 is a simulator and assembler for the Intel 8085 Microprocessor. For downloading latest release please head to the website - https://gnusim8085.github.io/ For source code - https://github.com/GNUSim8085/GNUSim8085

Icarus Verilog is an open source Verilog compiler that supports the IEEE-1364 Verilog HDL including IEEE1364-2005 plus extensions.

gputils is a collection of tools for Microchip PIC microcontrollers. Its goal is to be fully compatible with Microchip's tools, MPASM, MPLINK, and MPLIB.

UrJTAG aims to create an enhanced, modern tool for communicating over JTAG with flash chips, CPUs, and many more. It is a descendant of the popular openwince JTAG tools with a lot of additional features and enhancements.

PCB is a tool for the layout of printed circuit boards. PCB can produce industry standard RS-274X and Excellon NC-Drill format output for submission to board manufacturers.

gpsim is an open sourced simulator for Microchip's PIC microcontrollers. It supports all three families of PICs: 12-bit, 14-bit, and 16-bit cores. See also gputils http://gputils.sourceforge.net/

Sparse is a direct method solver for the large sparse matrices that are associated with electrical circuit simulation. It uses LU factorization and handles both real and complex square matrices.It is intended to solve many matrices with the same structure

Xschem is a schematic capture program, it allows to create a hierarchical representation of circuits with a top down approach . By focusing on interconnections, hierarchy and properties a complex system (IC) can be described in terms of simpler building blocks. A VHDL, Verilog or Spice netlist can be generated from the drawn schematic, allowing the simulation of the circuit. Key feature of the program is its drawing engine written in C and using directly the Xlib drawing primitives; this gives top speed performance, even on very big circuits. I have succesfully managed to simulate complete VLSI projects with this tool, both digital (Verilog / VHDL) and analog (Spice). Schematics can be printed in SVG, PNG, PDF, formats. XSCHEM runs on Linux or other Unix-likes with Xorg server and on Windows with the Cygwin layer and required tools installed. Can be found also on github: https://github.com/StefanSchippers/xschem

A Binary Decision Diagram library, with : many highly efficient vectorized BDD operations, dynamic variable reordering, automated garbage collection, a C++ interface with automatic reference counting, and much more.

v21.06.012 Complete implementation of iec 104 protocol standard including File transfer. Make your RTU, protocol converter, Gateway, HMI, Data concentrator compatible with iec 104. *Industry Proved * Worldwide Customers Download Evaluation Kit - IEC 104 Development Bundle In the Development Bundle, We included IEC 104 Server & Client Simulator, Windows & Linux SDK. http://www.freyrscada.com/iec-60870-5-104.php http://www.freyrscada.com/iec-60870-5-104-Server-Simulator.php http://www.freyrscada.com/iec-60870-5-104-Client-Simulator.php http://www.freyrscada.com/iec-60870-5-104-Windows-Software-Development-Kit(SDK).php http://www.freyrscada.com/iec-60870-5-104-Linux-Software-Development-Kit(SDK).php Video Tutorial https://www.youtube.com/playlist?list=PL4tVfIsUhy1bx7TVjtZnqFB6tbZBhOlJP

TkGate is a event driven digital circuit simulator with a tcl/tk-based graphical editor. TkGate supports a wide range of primitive circuit elements as well as user-defined modules for hierarchical design.

MMTL, the Multilayer Multiconductor Transmission Line 2-D and 2.5-D electromagnetic modeling tool suite, generates transmission parameters and SPICE models from descriptions of electronics interconnect dimensions and materials properties.

'atlc' is a CAD package used for analysing and desiging electrical transmission lines of arbitrary cross section. Also for the design of directonal couplers. Some parts are CPU intensive, so multiple CPUs are supported.

A package for transient and steady state simulation of organic solar cells.

Wcalc is a tool for the analysis and synthesis of electronic components. Some of the models include coupled microstrip lines, single layer air core solenoid inductors, etc. Wcalc can analyze the electrical parameters based on the physical dimensions a

This project aims to develop an opensource software with an attractive and efficient GUI which allows to design linear electronic circuits and to characterize existing ones.

A UNIX/X11 circuit drawing application with schematic capture. Features user-definable parts libraries and fully hierarchical SPICE netlist generation.

An Electronic Definition Interchange Format (EDIF) parser which allows exports from one EDA schematic capture system (such as OrCad) for import into another (such as KiCad)

A Java Native Interface (JNI) library suitable for communicating with a range of USB interface chips from FTDI via the D2XX driver. It currently supports OS X 10.10+ and Windows 7/8 x64. On OS X, the 64 bit JVM is supported. On Windows, support is limited to the 64 bit JVM (Java 1.8 is now 64 bit). Version 1.0 --------------------------------- - Java 8 - SPI support and sample (via MPSSE)

Open firmware for Honeywell Rondostat HR20 radiator thermostats

ADMS is a code generator that converts electrical compact device models specified in high-level description language into ready-to-compile c code for the API of spice simulators. Repository migrated to: https://github.com/Qucs/ADMS For checkout do: git clone https://github.com/Qucs/ADMS.git

Alliance CAD System is a free set of EDA tools and portable cell libraries for VLSI design. It covers the design flow from VHDL up to layout. It includes VHDL simulator, RTL synthesis, place and route, netlist extractor, DRC, layout editor.