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Free interior design application
Sweet Home 3D is a free interior design application that helps you place your
furniture on a house 2D plan, with a 3D preview.
Quine-McCluskey Logic Simplifier
The Quine-McCluskey Logic Simplifier is a utility written to simplify
digital logic. You feed it a canonical decimal list and it does the rest.
Free explicit/implicit Finite Element Program
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).
Emacs lisp modules for the Verilog language
Verilog-mode.el is a Verilog mode for Emacs which provides context-sensitive
highlighting, auto indenting, and provides macro expansion capabilities to
greatly reduce Verilog coding time.
Recent versions allow you to insert AUTOS in non-AUTO designs, so IP
interconnect can be easily modified. You can also expand Verilog-2001 ".*"
instantiations, to see what ports will be connected by simulators.
X11 circuit schematics drawing program
xcircuit is software for drawing electrical circuits.
Compact Finite Element Analysis System
What is Z88?
Z88 is a fast, powerful and compact Finite Elements Analysis Program
especially designed for PCs, workstations and large computers with UNIX
and PCs with Windows XP/95.
FEATURES
# Z88 features 20 finite element types.
# It covers plane stress, plate bending, axial symmetric
structures and spacial structures up to 20-node Serendipity hexahedrons.
# Comes with a user-friendly interface (the Z88 Commander).
# Has a powerful mesh generator.
# Features a DXF converter and two plot programs.
# Contains the FEA solver featuring an in-situ Cholesky solver along
with the Jennings storage method.
# For large structures the new iteration solver is recommended.
# The import of COSMOS and NASTRAN files from Pro/ENGINEER (with
option Pro/MECHANICA) is possible.
Generates C++ and Python from ISO10303 files
In April/May 2012, STEP Class Library was renamed to STEPcode. This was done
because the old name wasn't accurate - the class libraries are only a fraction
of the software.
The STEP Class Library (SCL) originated at the National Institute of Standards
and Technology, or NIST. NIST started working with STEP in the 80's and
continued until the late 90's. Some components of SCL were originally written
in Lisp and then re-written in mixed C and C++ in the early 90's.
The rest of SCL was written in C++ to begin with.
STEPcode (SC) includes the class libraries, some of the most widely used EXPRESS
schemas, some tools to work with EXPRESS, and support libraries for those tools.
Two of the tools can create schema-specific libraries that are used with the
class libraries. There are also some test files and programs.
Event driven digital circuit simulator
TkGate is a event driven digital circuit simulator with a tcl/tk-based
graphical editor. TkGate supports a wide range of primitive circuit elements as
well as user-defined modules for hierarchical design.
The distribution comes with a number of tutorial and example circuits.
Analysis and synthesis tool for RF and microwave transmission lines
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
Tools to accurately transfer 3-D geometry between applications
The openNURBS Initiative provides CAD, CAM, CAE, and computer graphics software
developers the tools to accurately transfer 3-D geometry between applications.
openNURBS is an open source toolkit for reading and writing models in the 3DM
format