Although not strictly for forensic purposes, visualization tools such as the ones discussed here can be very useful for visualizing large data sets. As forensic practitioners need to process more and more data, it is likely that some of the techniques implemented by these tools will need to be adopted.
Visualization Toolkits and Libraries
- Graph Interface Library (GINY) - Java
- Gravisto: Graph Visualization Toolkit - An editor and toolkit for developing graph visualization algorithms.
- InfoViz Toolkit - Java, originally developed at INRA.
- JGraphT - A Java visualization kit designed to be simple and extensible.
- Linguine Maps - An open-source Java-based system for visualizing software call maps.
- Perfuse - A Java-based toolkit for building interactive information visualization applications
- Rox Graph Theory Framework - An open-source plug-in framework for graph theory visualization.
- TouchGraph - Library for building graph-based interfaces.
- VisAD - A Java component library for interactive and collaborative visualization.
- The Visualization Toolkit - C++ multi-platform with interfaces available for Tcl/Tk, Java and Python. Professional support provided by Kitware.
- Zoomable Visual Transformation Machine - Java. Originally started at Xerox Research Europe.
-  - A new language for doing graphics and visualization.
Graph Drawing Applications
- Graphviz - Originally developed by the AT&T Information Visualization Gorup, designed for drawing connected graphs of nodes and edges. Neato is a similar system but does layout based on a spring model. Can produce output as PostScript, PNG, GIF, or as an annotated graph file with the locations of all of the objects — ideal for drawing in a GUI. Runs from the command line on Unix, Windows and Mac, although there is also a MacOS GUI version.
- Guess: The Graph Exploration System - Originally developed at HP, this is a large Jython/Java-based system that you can use for building your own applications. Distributed under GPL.
- Hyperbolic trees, in Java. Check out the home page. Try clicking on the logo...
- InfoVis Cyberinfrastructure
- Another graph drawing system written in Java.
- Java Directed Graphs.
- Large Graph Layout (LGL)
- A bioinformatics system from University of Texas. They really mean Large.
- Java Universal Network/Graph Framework (JUNG)
- Graphing, data mining, social network analysis, and other stuff.
- NetVis 2D
- Another graph visualization and layout tool written in Java.
- Social Network Image Automater (SoNIA)
- Originally developed at Stanford. Written in Java.
- Real-time animations of dynamic graph structures. Written in Java. Sophisticated force model with strings and attraction.
- A 3-d graph network exploration tool. Employs 3D hyperbolic displays and layout based on a user-supplied spanning tree.
Geographical Drawing Programs
- aiSee Graph Layout Software
- Supports 15 layout algorithms, recursive graph nesting, and easy printing. Runs on Windows, Linux, Solaris, NetBSD, and MacOS. 30-day trial and free registered versions available. Academic pricing available.
- Tom Sawyer Software Analysis, Visualizaiton, and Layout programs.
- Heavy support for drawing graphs. Beautiful gallery. ActiveX, Java, C++ and .NET editions.
- ACM Symposium on Software Visualization
- May give you some ideas.