Cytoscape!

Gephi is an open-source software for visualizing and analyzing large networks graphs. Gephi uses a 3D render engine to display graphs in real-time and speed up the exploration. Use Gephi to explore, analyse, spatialise, filter, cluterize, manipulate and export all types of graphs.

KeyLines is a JavaScript toolkit used by developers to build powerful network visualization applications, quickly.

NodeXL is a free, open-source template for Microsoft® Excel® 2007 and 2010 that makes it easy to explore network graphs. With NodeXL, you can enter a network edge list in a worksheet, click a button and see your graph, all in the familiar environment of the Excel window.

As the easiest way to explore graph data, Linkurious technology helps you make sense of your data through a simple web-based interface. Companies can quickly visualize their data with Linkurious Enterprise or build their own application with the Linkurious SDK:

Neoclipse is a standalone workbench application to interact with Neo4j (database directory or server). It supports Cypher, index searches, visualisation, graph updates.

Wandora is a general purpose information extraction, management and publishing application based on Topic Maps and Java. Wandora has graphical user interface, layered and merging information model, multiple visualization models, huge collection of information extraction, import and export options, embedded HTTP server with several output modules and open plug-in architecture. Wandora is a FOSS application with GNU GPL license.Wandora is well suited for constructing ontologies and information mashups. Wandora is capable of extracting and converting a wide range of open data feeds to topic map formats (see image below). Beyond topic map conversion, this feature allows Wandora user to aggregate multidimensional information mashups where information from Flickr interleaves with information from GeoNames and YouTube, for example. »

TouchGraph is the producer of data visualization software TouchGraph Navigator 2. With TouchGraph Navigator 2, users can upload data and create "interactive network visualizations."[1] Users can purchase licenses for either a TouchGraph Navigator Desktop version or TouchGraph Navigator Web, where the user hosts visualizations on their server and views the visualization on a web browser.[1]

Polinode is a tool for collecting information on relationships between people. For example, who works with whom? Who do people go to for advice? And any other question you like. With a powerful survey tool to collect the data and integrated visualization and analysis functionality to explore the network data, Polinode aims to help organizations and non-profits cut through complexity.

Pathomx is a workflow-based tool for the analysis and visualisation of experimental data. Initially created as a tool for metabolomic data analysis is has been extended and can now be used for any scientific and non-scientific data analysis. The software functions as a hybrid of workflow and script-based approaches to analysis. Using workflows it is possible to construct rapid, reproducible analysis constructs for experimental data. By combining this with custom inline scripting it is possible to perform any analysis imaginable. Workflows can be dynamically re-arranged to test different approaches and saved to track the development of your approach. Saved workflows can also be shared with other users or groups, allowing instant reproduction of results and methods. Tools can export images as publication-ready high resolution images in common formats. »

the prefuse visualization toolkitPrefuse is a set of software tools for creating rich interactive data visualizations. The original prefuse toolkit provides a visualization framework for the Java programming language. The prefuse flare toolkit provides visualization and animation tools for ActionScript and the Adobe Flash Player.NOTE: Prefuse development has been opened up to the community and the source has moved from SourceForge to a new home on GitHub. Both Prefuse and Flare are now available on GitHub.Prefuse supports a rich set of features for data modeling, visualization, and interaction. It provides optimized data structures for tables, graphs, and trees, a host of layout and visual encoding techniques, and support for animation, dynamic queries, integrated search, and database connectivity. Prefuse is written in Java, using the Java 2D graphics library, and is easily integrated into Java Swing applications or web applets. Prefuse is licensed under the terms of a BSD license, and can be freely used for both commercial and non-commercial purposes.The visualization gallery and demonstration video provide numerous examples of the types of applications that can be built with the prefuse toolkit.To learn more about prefuse, take a look at the user's manual or the frequently asked questions. For users of the alpha version of the toolkit, there is also a porting guide for migrating to the beta version.Need help? Visit the Help Forum on SourceForge.net (You'll need a SourceForge login to post). Please be sure to include detailed information (e.g., stack traces, source code, etc) if you need debugging help.If you are interested in tools for ActionScript and Flash, see the prefuse flare project instead. »

An all-in-one organizational and social network analysis tool used by managers and management consultants.