Social network analysis, Link Analysis, and Visualization

• Analyst's Notebook, part of the i2 Intelligence-Led Operations Platform, delivers rich assisted analysis and visualization capabilities to support analysts to prevent crime and terrorism.

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• Centrifuge, offers analysts and investigators an integrated suite of capabilities that can help them rapidly understand and glean insight from new data sources.
• IBM SPSS Clementine, data mining suite, includes link visualization software.
• GraphInsight, explore your graphs through high-quality 2D and 3D visualizations.
• Hypersoft OmniContext, helps evaluate communication and collaboration, understand relationships and identify communities and members across geographies, divisions, and internal and external organizations.
• i2 Analyst's Workstation, i2 Inc. software for volume incident analysis; used worldwide to support intelligence-led policing, COMSTAT processes, anti-terrorism/force protection and more.
• InFlow, software for social network analysis & organizational network Analysis.
• KXEN Social Network Analysis (KSN), social network analysis solution for a deeper understanding of customer interactions, the customer connections and communities.
• LPA Data Mining tools let you build Link Analysis based applications like InFlow.
• Maltego, an open source intelligence and forensics application; allows you to identify key relationships and networks. Community Edition available
• marketVisual, online visual relationship mapping.
• NETMAP analytics, innovative combination of link analysis and data visualization, with applications to fraud detection and claims analysis.
• NetMiner, for Exploratory Analysis and Visualization of Network Data.
• Networked Insights: at the intersection of social networking, collective intelligence, and search, Networked Insights discovers customers' needs as they happen.
• NetworkX, a Python language software package for the creation, manipulation, and study of the structure, dynamics, and functions of complex networks.
• NodeXL, a free, open-source template for Microsoft Excel 2007 and 2010 that makes it easy to explore network graphs.
• OmniAnalyser contains instrumentation for automatic discovery and historic statistical analysis of corporate social networks with accent on different organizational units (users, departments, offices, countries etc.) and graphical data correlation viewing.
• PolyAnalyst, includes software for link analysis and visualization.
• Sentinel Visualizer, with the capabilities of advanced Social Network Analysis, providing the ability to see and analyze complex relationships that exist within data.
• Sonamine, performs scalable customized scoring of massive social networks and graphs.
• Svivot, offers fraud-detection solution based on analysis of networks of people and organizations.
• VisuaLinks(TM) suite, link analysis and data visualization tool
• UCINET, a package for social network analysis.
• Xanalys Link Explorer, provides powerful network analysis tools including link chart and timeline analysis, Bing mapping and Excel integration.

Sites for Social Network Analysis

• INSNA is the professional association for researchers interested in social network analysis.
• SNAP, Stanford social network analysis site, with software, datasets, papers, and more.
• Social network analysis software, wikipedia entry
• Web Identity Search Tool (WIST), for investigating data on Facebook, including finding the degrees of separation between two users.

Free and Open-source Social Network Analysis Software

• GraphChi can run very large graph computations on just a single machine, by using a novel algorithm for processing the graph from disk (SSD or hard drive).
• Graphviz, open source graph visualization software.
• JUNG, the Java Universal Network/Graph Framework, a software library for the modeling, analysis, and visualization of network data.
• libsna, Python open-source library for Social Network Analysis.
• Maltego Community Edition, an open source intelligence and forensics application; allows you to identify key relationships and networks. Commercial edition available.
• NETINF, infers a who-copies-from-whom or who-repeats-after-whom network of news media sites and blogs using the MemeTracker dataset.
• Network Workbench: a large-scale network analysis, modeling and visualization toolkit for biomedical, social science and physics Research.
• Networkx, Python package for the creation, manipulation, and study of the structure, dynamics, and functions of complex networks.
• Pajek, program for Large Network Analysis.
• R, includes several packages relevant for social network analysis: igraph: generic network analysis package; sna: for sociometric analysis of networks; network manipulates and displays network objects.
• Social Networks Visualiser (SocNetV), a flexible and user-friendly tool for the analysis and visualisation of Social Networks.
• Subdue, graph-based knowledge discovery system that finds structural, relational patterns in data representing entities and relationships.
• sna: R Tools for Social Network Analysis, including node and graph-level indices, structural distance and covariance methods, structural equivalence detection, and more.
• statnet, a suite of R packages for social network analysis, simulation and visualization.
• Tulip, an information visualization framework dedicated to the analysis and visualization of relational data (free).