D3.js - Data-Driven Documents. Graph Visualization for the Web. Choosel - Choosel: A data visualization framework for GWT. Gaphi. Using Gephi with Google Analytics to visualize keywords and landing pages. As of late, I've been playing a lot with data analysis and visualization tools.
Recently I've read two interesting books (Statistical Analysis with R and Visualize This: The FlowingData Guide to Design, Visualization, and Statistics ) and I'm on my way to another two to refresh my statistics knowledge. Free Visualization Software. Orgnet.com - Social Network Analysis software & services for organizations, communities, and their consultants.