Open Source C++ Electronic Design Automation (EDA) Software for Windows

Gerber2PDF is a command-line tool to convert Gerber files to PDF for proofing and hobbyist printing purposes. It converts multiple Gerber files at once, placing the resulting layers each on it's own page within the PDF. Each layer has a PDF bookmark for easy reference. Layers can optionally be combined onto a single page and rendered with custom colours and transparency. There is a Drill to Gerber converter available from the downloads page.

TimingEditor is a tool to graphically draw and edit timing diagrams.

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.

Multiple dielectric transmission line calculator using a 2D field solver to compute the transmission line characteristics from the circuit trace dimensions entered by the user.

Simulate electric current density in any conductive plane shape described by a bitmap image.

Voltage Drop Calculator for EE, supports multiple segments, 1 and 3 phase.

"cif2tribes" is a console-based tool for converting integrated circuit layouts into maps usable in the game Tribes 2, as a 3D visualization aid. The project code is modular enough to be easily extended to different game engines and input file formats.

G2C (Geospatial to Civil) The LandGML Interoperability Experiment initiated by Autodesk, U.S. Army Corps of Engineers Engineering Research and Development Center, and Galdos Systems. this open source tool transforms LandGML into LandXML documents.

Scripting Tcl interface to Qt multiplatform library

Two dimensional (2D) fine mesh finite element (FE) grid editing system. Includes constrained Delaunay triangulation, and automated grid resolution changes based on local attributes. Win32 and Motif GUIs. Mature application, now going open source.

Berenice is 3D visualasion tool for electronic printed boards design. It can take design made in Eagle or any other pcb tool and visualise, rotate, zoom, move and pick in nearly real world view.

the project work as a calculator electronics and electrical problems

RxCalc is a calculator for the analysis of multi-stage receiver. The software can calculate cascaded and system parameters: gain, noise, sensitivity, input and output P1dB and IP3, noise floor, spur-free dynamic range, MDS, SNR, and others. Sources code: https://github.com/arhiv6/rxcalc Binary package: http://sourceforge.net/projects/rxcalc/