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ChipVault is a VHDL and Verilog Chip Design Organization tool which improves design efficiency by: - Providing the ability to Navigate and Edit files Hierarchically. - Automatically generating Schematic Component Port views of VHDL and Verilog RTL files. - Automating RTL instantiation and template generation. - Providing Revision Control (designed for HW, not SW development). - Supporting External Tool Hooks (bottom-up vcoms,etc). - Providing an Issue Tracking Log with sorting. - Providing Netlist sorting and hierarchy viewing. - Supporting web-sharing of RTL files (both encrypted and clear). - Fast and Nimble.

GTKWave is a fully featured GTK+ based wave viewer for Unix and Win32 which reads LXT, LXT2, VZT, and GHW files as well as standard Verilog VCD/EVCD files and allows their viewing.

MeshDev is a mesh comparison software. It accepts two meshes as input and computes the geometrical deviation between the two meshes. It return numerical values and can optionaly generate visual results (with a pseudo-colored mesh corresponding to the measured deviation) in OpenInventor format.

MeshLab is an open source, portable, and extensible system for the processing and editing of unstructured 3D triangular meshes. The system is aimed to help the processing of the typical not-so-small unstructured models arising in 3D scanning, providing a set of tools for editing, cleaning, healing, inspecting, rendering and converting this kind of meshes.

pdnMesh: A finite element program ================================= Copyright (C) 2001-2005 Sarod Yatawatta pdnMesh is a program that can solve 2D potential problems (Poisson Equation) and eigenvalue problems (Helmholtz Equation) using the Finite Element Method. Common applications occur in electromagnetics, heat flow and fluid dynamics. It can solve problems using both Nodal Based Formulation and Edge Based (Vector) Formulation. The features of the program are as follows. * Automatic mesh generation according to given boundaries. * Adaptive and Interactive mesh refinement. * Problem solution using Cholesky Decomposition or Conjugate Gradient Method with sparse storage. * Eigenvalue solution using LAPACK. * (Optionally) Eigenvalue solution using QR iteration with shifts. * Generating plots of contours, mesh and gradient on screen. * Generating Encapsulated Postscript plots of contours and mesh. * Generating a data file of the mesh to be used by other solvers. * Can import DXF files generated by CAD programs. * GUI is available with glut and GTK/GTKGLExt. Needs OpenGL.

Ngspice is the name of a project and of a program in the project. Spice is the famous circuit simulator developed by the CAD Group of the University of California at Berkeley (UCB). The NG prefix has a lot of meanings: Next Generation, New Good, etc. Choose or invent the one you prefer. The ngspice project aims to improve the capabilities of the Spice3 circuit simulator. The heart of the project is the ngspice program, a circuit simulator derived from spice3f5.

PyCAM is a toolpath generator for 3-axis CNC machining. It loads 3D models in STL format or 2D contour models from DXF or SVG files. The resulting GCode can be used with EMC2 or any other machine controller. PyCAM supports a wide range of toolpath strategies for 3D models and 2D contour models.

PythonCAD is a CAD package written, surprisingly enough, in Python. The PythonCAD project aims to produce a scriptable, open-source, easy to use CAD package for Linux, the various flavors of BSD Unix, commercial Unix, and other platforms to which someone who is interested ports the program. Work began on PythonCAD in July, 2002, and the first public release was on December 21, 2002.The firs developer team stop to develop PythonCad In the 2007.In May 2009 A new developer team star to develop Pythoncad since now.

Qfsm is a graphical editor for finite state machines written in C++ using Qt. Finite state machines are a model to describe complex objects or systems in terms of the states they may be in. In practice they can used to create regular expressions, scanners or other program code. Current features of Qfsm are: - Creation, editing, loading and saving of binary and ASCII machines - Drawing of states and transitions - Binary and ASCII condition codes - Setting of a start state and end states - Zooming - Cut, copy & paste inside Qfsm - Printing of diagrams - Multiple windows - Integrity check - Interactive simulation - AHDL/VHDL export - State table export (Latex, HTML)

Qucs is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit. After that simulation has finished you can view the simulation results on a presentation page or window.