A circuit simulator with graphical user interface (GUI)
Qucs is a circuit simulator with graphical user interface. The software aims to support all kinds of circuit simulation types, e.g. DC, AC, S-parameter, Transient, Noise and Harmonic Balance analysis. Pure digital simulations are also supported.
Simple and intuitive 2D vector drawing for electronics and not only.
A multiplatform vector drawing program with a complete library of electronic symbols. Schematics and drawings are stored in a very compact text format. There is no netlist concept behind the drawings (so no simulation, and this is a choice) but this allows a great graphical flexibility and ease of use, making FidoCadJ the perfect tool for exchange sketches in forum and newsgroup discussions with a few clicks. Drawings can be exported in several graphic formats, such as pdf. Follow the development live on Twitter: https://twitter.com/davbucci
The sigrok project aims at creating portable, cross-platform, Open-Source logic analyzer software that supports various hardware products. The sigrok+ project is a fork of the great sigrok project, with added support for oscilloscopes.
OpenCADServices is an interface standard for Mechanical Computer Aided Design (CAD) systems that enables the interoperability of CAD, Computer Aided Manufacturing (CAM) and Computer Aided Engineering (CAE) tools. (OMG CadServices)
Home Automation Server onewire is a small Server witch is able to interact with a onewire Network. With an simple XML-File you are able to configure the functionality of the ow-devices. Furthermore you can query server by a simple terminal like telnet.
The comprehensive C++ library MGEN for IC layout and connectivity comes with the X11/Motif full custom layout editor PARIS and the powerful waveform viewer/processor MANIAC. Industry proven, it is the basis for layout generators, placers, routers etc.
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.
A calculation tool for the MC34063
If you ever worked with the MC34063 Switching Controller, you know what a pain it is to calculate all the part values. This tool is an universal tool to help you with this process. You can calculate any standard application, such as step-up, step-down, inverting and step-up-down. PS: I would be happy about any (positive xD) reviews as well as any bugreports, comments or feature requests that you might have!
A graphical Finite State Machine (FSM) designer.
A graphical tool for designing finite state machines and exporting them to Hardware Description Languages, such as VHDL, AHDL, Verilog, or Ragel/SMC files for C, C++, Objective-C, Java, Python, PHP, Perl, Lua code generation.
The DigitalSimulator is your Virtual Electronics Lab, allowing you to design, simulate and output your digital circuit board designs.
ParaDef (Parametric Definition System) is a complete CAD/CAE/Product Development solution. ParaDef encompasses all aspects of product development into a single IDE, enabling rapid development of new products and in-depth analysis of existing solutions.
An Open Source Parser Library for parsing Verilog, System Verilog, EDIF and VHDL source files.
Z88 a free finite elements program featuring 20 different element types for LINUX and Windows. Includes two solvers, a mesher, plot programs and a GUI with online help.
Open firmware for Honeywell Rondostat HR20 radiator thermostats
With eparts, you can manage your stock of electronic components. You can create and manage projects, part lists, suppliers, buying lists etc. and import projects from EDA tool 'kicad'. It's written with Ruby on Rails.
EDA / PCB software to envelope and manufacture printed circuit boards
esweep is a scriptable audio measurement program which features various signals and signal processing functions. Its main purpose is the measurement of speakers.
Simulator for thermal conduction in solid material. Uses SPICE for calculations and wxWindows for providing Windows and Linux GUI.
upf2cpf is a cool command line tool which will takes in a UPF(Unified Power Format) and will convert it to a CPF(Common Power Format).This tool is very useful for Chip Design Engineers, who want to feed the power related info about the RTL in UPF/CPF.
Gerber2eps - A small program for converting Gerber RS-274D files to Encapsulated Postscript (EPS).
A IC/MEMS layout editor. Features: all angle, font generator, macros, boolean operations, design rule checker, supported formats:Calma GDSII, OASIS (Open Artwork System Interchange Standard), OpenAccess, DXF, CIF (Caltech Intermediate Form), ...
is a Qt program to generate SMD chip shooter code
Still struggling with Excel to setup your pick and place machine ? Cad2Board reads component mounting information from Eagle, Altium Designer and Mentor Expedition PCB designs. Component or component groups can be assigned to feeder slots by drag and drop. Any modifications for PCB population can be defined to generate PCB variants, consider rotations from unusual tape and reel packaging or to account in advance for CAD library or PCB design bugs. Generated setup data is stored in a seperate project file. Succeeding PCB revisions what contain redesign changes can be merged with existing project setup data. Inconsistencies are highlighted to solve them by new assignements and unused feeders can be cleaned up with a single push. Finally a machine program is generated in Heeb HE50 format and downloaded to the machine interface.
The sigrok project aims at creating a portable, cross-platform, Free/Libre/Open-Source signal analysis software suite that supports various device types, such as logic analyzers, MSOs, oscilloscopes, multimeters, LCR meters, sound level meters, thermometers, anemometers, light meters, dataloggers, function generators, power supplies, GPIB interfaces, and more.
WIDI CAD is a project which tries to deliver an open source WIring DIagram CAD. In Opposit of all the other electrical CAD Systems WIDI is not meant for PCB's. It's meant for industrial control cabinets.