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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.

TOCHNOG is a free finite element program with many features. TOCHNOG accepts free format input. Boundary conditions can be imposed at geometrical entities, as well as nodes and elements. Among the FE models supported are: differential equations (materials), convection-diffusion equations, Stokes and Navier-Stokes (fluids), elasticity (isotropy and transverse isotropy), plasticity (Von-Mises, Mohr-Coulomb, etc.; plastic surfaces can be arbitrarily combined). Residues in equations and error estimates for all data can be printed or plotted using gnuplot/plotmtv, CalculiX or gmsh. TOCHNOG supports a choice of description frames including Lagrangian, Eulerian and arbitrary Eulerian-Lagrangian (AEL).

VARKON can be used as a traditional CAD-system with drafting, modelling and visualization if you want to but the real power of VARKON is in parametric modelling and CAD applications development. VARKON includes interactive parametric modelling in 2D or 3D but also the unique MBS programming language integrated in the graphical environment. The system was originally developed by a group at the University of Linkoping in Sweden during 1984-86 under the leadership of Dr. Johan Kjellander who was then the president of Microform AB. From 1986 the system was owned, marketed and further developed by Microform AB.

Transcalc is an analysis and synthesis tool for calculating the electrical and physical properties of different kinds of RF and microwave transmission lines. Transcalc was somewhat inspired by the functionality of Agilent Technologies' commercial program linecalc. Transcalc aspires to be more functional in the long run and well-documented with appropriate references to formulas that are used. Transcalc is built using the GIMP toolkit (GTK) for its GUI interface. For each type of transmission line, using dialog boxes, you can enter values for the various parameters, and either calculate its electrical properties (analyze), or use the given electrical requirements to synthesize physical parameters of the required transmission line. Available transmission lines (this list will expand with subsequent releases): - Microstrip - Rectangular Waveguide - Coaxial Line - Coupled Microstrip

TaBE stands for `Taiwan and Big5 Encoding'. libtabe provides unified interface and library dealing with Chinese words, phrases, sentences, and phonetic symbols. It is intended to be used as the foundation of Chinese text processing.

aterm is a color vt102 terminal emulator, based on rxvt 2.4.8 with additions for fast transparency. It was created with AfterStep users in mind, but is not tied to any libraries, and can be used anywhere.

Chewing - An Intelligent Chinese Phonetic Input Method for UNIX