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'GLE' is a package of C functions that draw extruded surfaces, including surfaces of revolution, sweeps, tubes, polycones, polycylinders and helicoids. The extruded surface is specified with a 2D polyline that is extruded along a 3D path. A local coordinate system allows for additional flexibility in the primitives drawn. Extrusions may be texture mapped in a variety of ways. The GLE library generates 3D triangle coordinates, lighting normal vectors and texture coordinates as output. It uses the GL or OpenGL API's to perform the actual rendering.
GSpeakers is a GNOME loudspeaker design program built with the Gtkmm 2.0 toolkit.
Gnuae Heckert gnu.tiny.png
GnuAE is a GNOME/GTK compliant GUI for designing photovoltaic and wind powered houses with compliance to the National Electrical Code. As GnuAE has a database of components and current average prices, it can help you judge the total cost of a system by experimenting with different options like using a propane or DV fridge, or more or less reserve days or hours of sun. GnuAE is also designed to make it much easier to wire for NEC code compliance without studying all 800 some pages of the NEC specification. Even for an electrician, the interdependencies between calculations is daunting. While DC wiring is much simpler than AC wiring, most off-grid household systems are both. There is even a built in NEC calculator for people that have a good feel for what they are doing, but want to also experiment with differing conduit sizes, parallel wire runs, and voltage drop.
GnuCAD's goal is to create a professional free software CAD (Computer Aided Design) package for *nux systems. The system will eventually include a plugin interface as well as scripting capability, possibly through Perl, bash or another language.
KiCad is electronic design automation (EDA) software made for designing schematics of electronic circuits and printed circuit boards (PCB). KiCad is developed by the KiCad Developers Team, and features an integrated environment with schematic capture, bill of materials list, PCB layout and much more. KiCad is cross-platform, written with WxWidgets and runs on FreeBSD, Linux, Microsoft Windows and Mac OS X. A lot of component libraries are available. Also migrating tools for components are available (from other EDA software tools). File formats are plain text and well documented, which is good for CVS or Subversion and to make automated component generation scripts. Multiple languages are supported, such as English, Portuguese, Spanish, Czech, Polish, French, German, and Russian. The 3D PCB viewer use 3D model from Wings3D CAD.
LibStroke is a stroke translation library. Strokes are motions of the mouse that can be interpreted by a program as a command. Strokes are used extensively in CAD programs to select tools or perform actions; they are an extremely natural human-computer interface.
LibreCAD is an application for computer aided design (CAD) in two dimensions (2D). With LibreCAD, you can create technical drawings such as plans for buildings, interiors, mechanical parts or schematics and diagrams.
Libredwg Heckert gnu.tiny.png
LibreDWG is a free C library to read and write DWG files. This program is part of the GNU project, released under the aegis of GNU. It is licensed under the terms of the GNU General Public License version 3 (or at you option any later version). DWG is a file format created in the 70's for the emerging CAD applications. Currently it is the native file format of AutoCAD, a proprietary CAD program developed by AutoDesk. LibreDWG is a fork from LibDWG due to its usage of Esperanto, which we think is not the best strategy for a free software project which aims to get lots of contributors. LibreDWG is written in English. Among the example applications we wrote using LibreDWG is an generic reader to some formats, a writer from some formats, a rewriter, i.e saveas tool, and some initial SVG and PS conversion. Currently LibreDWG can reliably read r13-r2018 DWG and write DXF formats, and can write r13-r2000 DWG formats. Work on pre-r13 is making good progress. DXF reading is also in progress.
OpenSCAD is a software for creating solid 3D CAD objects. It focuses on CAD aspects rather than artistic ones. OpenSCAD is not an interactive modeller. Instead it is something like a 3D-compiler that reads in a script file that describes the object and renders the 3D model from this script. This gives the designer full control over the modelling process and enables him to easily change any step in the modelling process or make designes that are defined by configurable parameters.
'Oregano' is an application for schematic capture and simulation of electrical circuits. The actual simulation is performed by SPICE, GNUcap or ngspice, but not necessary to run the application.
This is a candidate for deletion: 1. Could not find any files/source code (website of author exists). PROFOIL-WWW is a Web version of PROFOIL - the author's low-speed airfoil design code. PROFOIL is not an all inclusive airfoil-design package. Inverse design, as later discussed, is its strength; analysis is not - it has none. The airfoil performance characteristics (viscous results) are determined with post-processing analysis tools (the Eppler code, Mark Drela's XFOIL, other codes, and finally when things look promising the wind tunnel). The Eppler code, XFOIL, the wind tunnel, etc must be separately obtained to complete the design-tool suite. If you develop a promising design, need some wind tunnel time and are associated with a potential sponsor, we might be able to help.
The goal of the PythonCAD project is to create a fully scriptable drafting program that will match and eventually exceed features found in commercial CAD software. The program, currently under active development, is in its early stages but can do simple drawing.
QCad - Community Edition
QCad is a powerful but easy to use 2D CAD program for GNU/Linux. QCad uses DXF as its standard file format. You can load, merge and save DXF files. Furthermore it offers support for the HPGL format. While other CAD packages get complicated to use and unclear, QCad tries to stay comfortable and even an absolute beginner can create professional drawings with a minimum of effort.
The Edge Integration Station Controller (sc) is a program intrepreter for running applications that interface with and control Semiconductor Manufacturing equipment. It connects to equipment supporting GEM/SECS, HSMS, and serial protocols. Sc uses *NIX sockets and file sockets as its communication messaging bus.
Skidbladnir 2
Skidbladnir is a tool based on Altschuller's computer-aided inventing. He developed the 'ARIS' method, an algorithm for solving inventive tasks. The goal is to creata an ideal machine, taking into account both administrative and technical considerations.
'TkGate' is an event-driven digital circuit simulator with a TCL/Tk-based graphical editor. It supports a wide range of primitive circuit elements and user-defined modules for hierarchical design. TkGate has multi-lingual support for English, Japanese, French, German, Spanish, Welsh, and Catalan.
Umbrello UML Modeller
Umbrello UML Modeller is a Unified Modelling Language diagram tool for KDE. It is able to produce Class diagrams, Sequence diagrams, Collaboration diagrams, Use Case diagrams, Activity diagrams, and State diagrams. It uses an XMI-based file format. It is now part of KDE and will be released with KDE 3.2
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.
VIPEC is an network analyser for electrical networks. It takes a description of an electrical network, and performs a simulation of the circuit response in the frequency domain. Output is in the form of 2-port parameters, and can be plotted on a grid and in Smithchart format. VIPEC supports various lumped circuit elements, as well as elements like transmission lines and 2-port data files.
VCD is a standard signal trace format for HDL simulations. Often, users must compare behaviors of 2 different models which are supposed to work similarly. For example, when a Verilog core design is modified, users must verify that output pins of both the original and modified cores, behave the same if given the same stimulus. But the testbenches for each model are different, and therefore the behavors are slightly different also. The 'VTracer' package includes a set of configurable Perl scripts which performs comparison between pairs of signals from 2 different VCD files, and a sample Testbench demonstrating the integration of the tool.
The aim of this project is to provide a common infrastructure for free CAD software—basically, a GUI ready to fill with domain-specific code. It covers common, reusable features such as an undo/redo mechanism, property editor, library browser, navigation between files and management of file dependencies. The domain modules (which are intended to be written in a scripting language as far as reasonably possible) provide a description of the actual objects and operations. This architecture roughly compares to that of Emacs. Xi is still in early development.

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