Graphviz - Graph visualization

Graphviz is open source graph visualization software. Graph visualization is a way of representing structural information as diagrams of abstract graphs and networks. It has important applications in networking, bioinformatics, software engineering, database and web design, machine learning, and in visual interfaces for other technical domains.

Gephi - Graph Visualization

Gephi is a tool for people that have to explore and understand graphs. Like Photoshop but for data, the user interacts with the representation; manipulate the structures, shapes and colors to reveal hidden properties. The goal is to help data analysts to make hypothesis, intuitively discover patterns, and isolate structure singularities or faults during data sourcing. It is a complementary tool to traditional statistics, as visual thinking with interactive interfaces is now recognized to facilitate reasoning. This is software for Exploratory Data Analysis; a paradigm appeared in the Visual Analytics field of research.

EJS Modeling

Easy Java Simulations (EJS)

Easy Java Simulations (EJS) is a Java program that can be run under any operating system that supports a Java Virtual Machine (VM). Because Java is designed to be platform independent, the EJS user interface on Microsoft Windows, Macintosh OS X, Unix, and Linux is almost identical.

Tracker

Tracker is a free video analysis and modeling tool. Built on the Open Source Physics Java framework, Tracker combines videos of physics experiments with computer modeling. Key features include object tracking, center of mass tracking, rotational motion data, interactive graphic vectors and more.