resources tagged with "tools" 
GeoCommons
Hub for geographical data and map-making.
tags: tools repository
Cytoscape
Open source bioinformatics software platform for visualizing molecular interaction networks or network graphs of any kind involving nodes and edges (e.g., social networks).
tags: tools visualization
The New York Times Visualization Lab
Create visualizations of data and information presented by the New York Times using the "Many Eyes" technology from IBM Research.
tags: tools visualization
Modest Maps
Display and interaction library for tile-based maps in Flash and Python.
tags: tools visualization
Mesh Processing Library
Library for creating Voronoi, Delaunay and Convex Hull diagrams in Processing. By Lee Byron.
tags: tools visualization
Mapstraction
Mapstraction provides a common API for various JavaScript mapping APIs, allowing developers to easily change the mapping provider of their application.
tags: tools visualization
Beautiful Soup
Python HTML/XML parser, for screen-scraping data sources that don't yet offer downloadable data or an API.
tags: tools
Obsessing
Web-based Processing.js sandbox.
tags: tools visualization
Processing.js
A JavaScript version of the Processing visualization language. By John Resig.
tags: tools visualization how to
WikiViz: Tools
Annotated list of tools for data visualization.
tags: tools visualization repository
Prefuse Visualization Toolkit
Free set of tools for creating rich interactive data visualizations.
tags: tools visualization how to
Hpricot HTML Parser
A fast and delightful HTML parser for Ruby, for data sources that don't yet offer downloadable data or an API.
tags: tools
Flare Visualization Toolkit
A collection of ActionScript 3 classes for building interactive visualizations on the web.
tags: tools visualization how to
Graphviz
Open source graph visualization software with a web interface.
tags: tools visualization how to
Processing
Open source programming language and environment for programming images, animation and interactions. Often used for data visualization.
tags: tools visualization how to