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This tool generates timing diagrams for documenting hardware design. It reads the description from a text file with a simple syntax. It generates vector graphic (EPS, SVG or EMF format). It can be used in command line mode or with a GUI. It is written in Python and works on any platform.
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 SESAME (Simulation of Embedded System Architectures for Multilevel Exploration) software system is an embedded system co-simulation environment and research tool which implements the ideas of the SESAME project at the University of Amsterdam.
Generic packet visualization tool for generating flow diagrams from formatted logs. Can be used for cache coherency diagrams, software interaction diagrams or to plot network communications.
"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.
tkCybernetics is a small grafical tool for rapidly setting up simulations of simple cybernetic systems. It was designed for didactic purpose but might be useful for the quick test of some circuit too.
A java based digital logic simulator, designed to be used as an educational tool.
uses a GUI to allow users to quickly and easily create and visualise circuits from simple components. User can create custom components
NecJGui is an antennas design tool, interface for Numerical Electromagnetic Code. It allows easily making NEC input files, and viewing them in 3D. It also contains a version of the simulator, so it's complete IDE for full-wave EM simulation.