Open Source Computer Aided Instruction (CAI) Software

Qucs is a circuit simulator with graphical user interface. The software aims to support all kinds of circuit simulation types, e.g. DC, AC, S-parameter, Transient, Noise and Harmonic Balance analysis. Pure digital simulations are also supported.

Over 1,000,000 page views per month. Jmol/JSmol is a molecular viewer for 3D chemical structures that runs in four independent modes: an HTML5-only web application utilizing jQuery, a Java applet, a stand-alone Java program (Jmol.jar), and a "headless" server-side component (JmolData.jar). Jmol can read many file types, including PDB, CIF, SDF, MOL, PyMOL PSE files, and Spartan files, as well as output from Gaussian, GAMESS, MOPAC, VASP, CRYSTAL, CASTEP, QuantumEspresso, VMD, and many other quantum chemistry programs. Files can be transferred directly from several databases, including RCSB, EDS, NCI, PubChem, and MaterialsProject. Multiple files can be loaded and compared. A rich scripting language and a well-developed web API allow easy customization of the user interface. Features include interactive animation and linear morphing. Jmol interfaces well with JSpecView for spectroscopy, JSME for 2D->3D conversion, POV-Ray for images, and CAD programs for 3D printing (VRML export).

Circuitmod is a circuit simulator that extend the capacity of the original Falstad's Java Circuit Simulator into CMOS Chips, Led Arrays, Led Matrix and PIC Programming. The Horizon is limitless. Try today.

EduMIPS64 (aka edumips) is a cross-platform MIPS 64 ISA simulator. It can be used to run and debug MIPS programs that are written using the MIPS64 instruction set. It supports visual debugging and lets you see what instructions do in the pipeline.

JMCAD is an program for the modeling and simulation of complex dynamic systems. This includes the ability to construct and simulate block diagrams. The visual block diagram interface offers a simple method for constructing, modifying and maintaining complex system models. The simulation engine provides fast and accurate solutions for linear, nonlinear, continuous time, discrete time, time varying and hybrid system designs. With JMCAD, users can quickly develop software or "virtual" prototypes of systems or processes to demonstrate their behavior prior to building physical prototypes. The user builds his system model by selecting predefined blocks from a block library and simply wiring the blocks together. Each block of the diagram performs a function. Users can also create custom blocks in Java and add them to the JMCAD block library. JMCAD is a block diagram language for creating complex nonlinear dynamic systems.

An open-source corpus analysis class library written in C#. GUI of Tenka Text 0.1.3 comes with Wordlister - an advanced, extremely fast graphical wordlist tool and a simple regex concordance tool. Tenka Text - the open-source answer to WordSmith Tool

simBio is a Java package to create biological models for biologist and others. Cardiac cell models are available.

Argunet is a client-server software for computer-supported argument visualization (CSAV). Reconstructed debates are visualized as argument maps and can be shared through the Argunet Server.

MathJax is a modular javascript framework for including mathematics in web pages. It can take input in various formats, like TeX and MathML, and can produce output in various forms, such as MathML or HTML-with-CSS. Components are loaded as needed.

The virtual lab is a NASA-funded project to provide simulated instrumentation. ITG has developed a Virtual Microscope (Virtual SEM and LM) for viewing high-resolution, multi-dimensional image datasets. More info and data: http://virtual.itg.uiuc.edu

G.A.V. (Graph Algorithm Visualizer) is a tool that visualizes algorithms from graph theory. A step-by-step visualization from each different algorithm allows the user to understand the particular algorithm very easily.

A linguistic tool to aid in the study of Linguistics/Phonology, specifically distinctive features of possible language sounds. Comprised of both a Visual C++ .NET version as well as a Java based web applet version. The C++ version has all but been ab

The Repast Suite is a family of advanced, free, and open source agent-based modeling and simulation platforms that have been under continuous development for over 20 years. Current source code and releases are hosted on Github https://repast.github.io/

BABA stands for Basic-Algorithms-of-Bioinformatics Applet. This project aims to create a set of bioinformatic algorithms presented didactically. The algorithms available at the moment are: Needleman&Wunsch, Smith&Waterman, Four Russians and Nussinov.

Pw.mac is an enhancement to Maxima, so you will have to get Maxima. Pw.mac enables Maxima to handle integration, differentiation, computation of products, sums and powers, plotting, transforming and simplifying piecewise continuous functions.

VibroToolbox is a tool for research and education in vibrometry. Test your audio equipment, describe responses to vibratory stimulation and analyze directionality. It works with precision i/o hardware or simple sound cards, various sensors and speakers.

ChemProV is a tool used by chemical engineering students to solve material balance problems. The project is maintained by Washington State University. For more information on how to install ChemProV, please visit the project's website.

A java based digital logic simulator, designed to be used as an educational tool. uses a GUI to allow users to quickly and easily create and visualise circuits from simple components. User can create custom components

libLCS is a hardware description library in C++ aiming to be as powerfull and easy as the Verilog HDL. It currently supports logic gates, flipflops, clock, and facilitates delays, continuous assignments and variable value dumping into VCD files.

The program evaluates ordinal expressions and relations. displaying the normal form output in plain text and/or TeX format. It supports notations for ordinals through and somewhat beyond those definable by the Veblen function.

Projectile motion is a GUI based program that calculates various parameters of projectile motion based on initial velocity and height. It also plots the path of the projectile and can also find the location (x,y) as a function of time and vice versa.

Molecular Graphics and Dynamics. Molecular model builder. Part of the Ascalaph Designer http://sourceforge.net/projects/asc-designer/ project. Windows & Linux.

audacity-extra now provides a sleek dark themed version of the Audacity open source sound editor. The project experiments with Audacity variations. There's a vowel-sound target-practice display for language learners and an analog waveform data logger for embedded systems.

Avenzoar is a one-year exploration of renal cell carcinoma morphology and its related single nucleotide polymorphisms (SNPa) as a method of automating diagnosis of cancer by using a computer-aided decision tree controlled by analytical statistics.

blat(mat) is a Braille to print translator for maths. It takes a Spanish Six-dot Mathematical Braille (not Nemeth Code) text and converts it to an HTML file ready to be translated into XHTML+MathML by ASCIIMathML (javascript).