Scilab

Scilab is free and open source software for numerical computation providing a powerful computing environment for engineering and scientific applications.
Scilab is released as open source under the CeCILL license (GPL compatible), and is available for download free of charge. Scilab is available under GNU/Linux, Mac OS X and Windows XP/Vista/7/8 (see system requirements).

What is Scilab ?
Scilab includes hundreds of mathematical functions. It has a high level programming language allowing access to advanced data structures, 2-D and 3-D graphical functions.
A large number of functionalities is included in Scilab:

BRL-CAD

BRL-CAD is a powerful open source cross-platform solid modeling system that includes interactive geometry editing, high-performance ray-tracing for rendering and geometric analysis, a system performance analysis benchmark suite, geometry libraries for application developers, and more than 30 years of active development.

BRL-CAD is a powerful cross-platform Open Source combinatorial Constructive Solid Geometry (CSG) solid modeling system that includes interactive 3D solid geometry editing, high-performance ray-tracing support for rendering and geometric analysis, network-distributed framebuffer support, image and signal-processing tools, path-tracing and photon mapping support for realistic image synthesis, a system performance analysis benchmark suite, an embedded scripting interface, and libraries for robust high-performance geometric representation and analysis.

A9CAD

A general purpose 2-dimensional CAD program. It supports industry standard DWG/DXF drawing formats. With A9CAD you can draw shapes such as line, rectangle, circle, poly-line, text and dimension; performing drawing modifications like move, scale, rotate, explode, trim, fillet and mirror; edit color, fill mode, line type and line width; change entity attributes via properties window. Manage drawing styles and settings and configure drawing environments.

Geomagic Design

Driving Engineering Forward with Geomagic Design
With comprehensive 3D CAD tools for design, engineering and preparation for manufacturing, Geomagic Design empowers rapid, accurate product development in an easy-to-use environment.

At a highly affordable price point, Geomagic Design delivers top-end tools at lower cost, including comprehensive assembly, parametric and direct editing tools, 2D documentation, sheet metal design, motion analysis and integrated CAD data sharing tools.

Open casecade

Open Cascade is an Information Technology Company of Capgemini, Open Cascade provides services in the domain of scientific and technical computing and simulation tools.

Open Cascade is primarily known to public for its Open Source platforms the company has been maintaining, improving and distributing free of charge for many years:

Open Cascade Technology (OCCT) for 3D surface and solid modeling, visualization, data exchange and rapid application development
Salome (software) - free software that provides a generic platform for Pre- and Post-Processing for numerical simulation.

Google SketchUp

SketchUp is useful from the earliest stages of design to the end of construction. Programming, diagramming, design development, detailing, documentation, RFIs—wherever you need drawings, you need SketchUp Pro.


Produce scaled, accurate drawings

SketchUp isn’t just for 3D models. Draw plans, elevations, details, title blocks and a lot more with LayOut. When your model changes, so does your document. Simple.


Generate presentation documents

The easiest way to draw in 3D
With LayOut, you’re equipped for page design, drafting, vector illustration and slide presentations: everything you need to explain everything.

Create compelling walkthroughs

Use SketchUp Pro to turn your models into animated walkthroughs and flyovers that explain every detail.

Get good, fast

Whoever asked for complicated CAD software? SketchUp is hands-down the most intuitive and easy-to-learn 3D drawing tool around.

GLE - Graphics Layout Engine

Description
GLE is a graphics scripting language designed for creating publication quality graphs, plots, diagrams, figures and slides. GLE relies on LaTeX for text output. Its output formats include EPS, PS, PDF, JPEG, and PNG. GLE (Graphics Layout Engine) is a graphics scripting language designed for creating publication quality figures (e.g., a chart, plot, graph, or diagram). It supports various chart types (including function plot, histogram, bar chart, scatter plot, contour plot, color map, and surface plot) through a simple but flexible set of graphing commands. More complex output can be created by relying on GLE's scripting language, which is full featured with subroutines, variables, and logic control. GLE relies on LaTeX for text output and supports mathematical formulae in graphs and figures. GLE's output formats include EPS, PS, PDF, JPEG, and PNG. GLE is licenced under the BSD license. QGLE, the GLE user interface, is licenced under the GPL license.

Categories
Graphics, Visualization

License
BSD License

FormScanner - Free OMR Software

Description
FormScanner is an OMR (Optical Mark Recognition) software that automatically marks multiple-choice papers.
FormScanner not bind you to use a default template of the form, but gives you the ability to use a custom template created from a simple scan of a blank form.
The modules can be scanned as images with a simple scanner and processed with FormScanner software.
All the collected information can be easily exported to a spreadsheet.

Categories
Information Analysis

License
GNU General Public License version 3.0 (GPLv3)

NetToPLCSim

Overview
NetToPLCSim extends the Siemens PLC Simulation Software "PLCSIM" by a TCP/IP network interface for variable services, so you can test your HMI/SCADA-Software together with PLCSIM without real hardware.

Version information
There are two versions of NetToPLCSim which are using a different interface to exchange data with

PLCSim:
S7online-Version. All versions since V0.9.x.
S7ProSim-Version. All versions V0.7.x and before It's recommended to use the S7online-Version.

PICsim - PIC microcontroller simulator

Description
PICsim emulates a microcontroller PIC16F628/16F777/16F877A/18F452/18F4550/18F4620 and periferics such as USART and timers, the simulator architecture permit easy implementation of external elements in c language. PicsimLab is a realtime emulator of development boards with integrated MPLABX debugger.
Categories
Testing, Simulations, Electronic Design Automation (EDA), Computer Aided Instruction (CAI)
License
GNU General Public License version 2.0 (GPLv2)

Advanced HMI

Manufacturing Automation is a software development company that specializes in software for automation and manufacturing.


AdvancedHMI is our most popular off-the-shelf packages. It is used to build HMI applications for machinery or facility control. It has several advantages over other HMI software and hardware. These include unlimited flexibility, extend-ability, and cost. The base package is absolutely free and unrestricted, so give it a try for yourself.

Features

• Allen Bradley DF1 RS232 Driver
• Allen Bradley Ethernet/IP Driver for SLC,MicroLogix, ControlLogix, and CompactLogix
• Beckhof TwinCAT Driver, ModbusTCP and ModbusRTU drivers
• Omron Drivers
• Drivers are accessible via VB or C# code
• Build an HMI in Visual Studio 2010-2013 (free) without writing any code
• Works with Visual Studio Community Edition
• Tested on Mono on Linux (except OPC driver)
• Even Works on the Raspberry Pi

Arduino- Software

The open-source Arduino Software (IDE) makes it easy to write code and upload it to the board. It runs on Windows, Mac OS X, and Linux. The environment is written in Java and based on Processing and other open-source software.
This software can be used with any Arduino board.
Refer to the Getting Started page for Installation instructions.

FreeCAD

A parametric 3D CAD modeler

FreeCAD code and release files are now hosted on github at https://github.com/FreeCAD/FreeCAD 

Only older files and code are available here.

FreeCAD is a general purpose feature-based, parametric 3D modeler for CAD, MCAD, CAx, CAE and PLM, aimed directly at mechanical engineering and product design but also fits a wider range of uses in engineering, such as architecture or other engineering specialties. It is 100% Open Source and extremely modular, allowing for very advanced extension and customization. 

FreeCAD is based on OpenCasCade, a powerful geometry kernel, features an Open Inventor-compliant 3D scene representation model provided by the Coin 3D library, and a broad Python API. The interface is built with Qt. FreeCAD runs exactly the same way on Windows, Mac OSX and Linux platforms.

Description
LibreCAD is a fully comprehensive 2D CAD application that you can download and install for free. There is a large base of satisfied LibreCAD users worldwide, and it is available in more than 20 languages and for all major operating systems, including Microsoft Windows, Mac OS X and Linux, including Debian, Ubuntu, Fedora, Mandriva, Suse, etc.
LibreCAD is a free Open Source CAD application for Windows, Apple and Linux. Support and documentation is free from our large, dedicated community of users, contributors and developers. You, too, can also get involved!

GNU PLOT

Gnuplot is a portable command-line driven graphing utility for Linux, OS/2, MS Windows, OSX, VMS, and many other platforms. The source code is copyrighted but freely distributed (i.e., you don't have to pay for it). It was originally created to allow scientists and students to visualize mathematical functions and data interactively, but has grown to support many non-interactive uses such as web scripting. It is also used as a plotting engine by third-party applications like Octave. Gnuplot has been supported and under active development since 1986.

Gnuplot supports many different types of 2D and 3D plots

Here is a Gallery of demos.

Gnuplot supports many different types of output

interactive screen display:		cross-platform (Qt, wxWidgets, x11) or system-specific (MS Windows, OS/2)
direct output to file:		postscript (including eps), pdf, png, gif, jpeg, LaTeX, metafont, emf, svg, ...
mouseable web display formats:		HTML5, svg

OpenFlower

Description
OpenFlower is a free and open source CFD code (for Linux and Windows) mainly intended to solve the turbulent incompressible Navier-Stokes equations with a LES approach. It can deal with arbitrary complex 3D geometries with its finite volume approach.

Categories
Physics, Simulations

License
Academic Free License (AFL), GNU General Public License version 2.0 (GPLv2)

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ARENA

Since Arena Simulation Software is the most used Discrete Event Simulation Software in the world, students who have Arena experience possess a valuable skill sought after by many companies. With Arena training, students are introduced to the principles of simulation and will enhance their problem-solving skills by conducting effective simulation modeling, analysis, and research projects. Simulation concepts are understood quickly and easily through a simple flowchart modeling approach. There is no need to be a programmer to take advantage of Arena’s comprehensive features and capabilities. Furthermore, the knowledge and experience gained through university course work and research helps students build a strong foundation in discrete-event simulation that applies to real-world situations they will encounter in the workplace.

The Arena Student version provides the functionality of Arena Professional Edition, with only a limit to the size of the models that can be built. The student version is available for download free of charge!
Download Link

ArcGIS Desktop

Professional GIS Authoring

There are lots of ways to make a map. But if people use your maps to make decisions that save money, time, or even lives, then you need to put science to work for you. Use ArcGIS for Desktop to build maps with up-to-date data, combined with deep analysis, and share them where they’ll have the most impact.

Create Smart Maps and Useful Apps

Visualize and share information in new ways for insightful and informed decision making. Map and manage your data with ArcGIS for Desktop, then create apps and share with others via the rest of the ArcGIS platform. ArcGIS for Desktop includes ArcGIS Online, so you immediately have access to a world of relevant content and ready-to-use apps to get you started right away.

Adams

The Multibody Dynamics Simulation Solution

As the world's most widely used Multibody Dynamics (MBD) software, Adams helps engineers to study the dynamics of moving parts, how loads and forces are distributed throughout mechanical systems.

Product manufacturers often struggle to understand true system performance until very late in the design process. Mechanical, electrical, and other subsystems are validated against their specific requirements within the systems engineering process, but full-system testing and validation comes late, leading to rework and design changes that are riskier and more costly than those made early on.

ANSYS

Computer-aided engineering is playing a growing role in higher education in the disciplines of science and engineering. At the undergraduate level, students use engineering simulation to learn physics principles and gain hands-on, real-world experience that can jump-start their careers. At the postgraduate level, researchers apply simulation tools to solve complex application problems. Commercial organizations regularly partner with educational institutions to foster innovative research — sometimes at the basic level — that can lead to breakthrough solutions.