As of July 2012, the development of Choosel has been discontinued

Choosel is an extensible, modular GWT framework for web-based visualizations that are composed of multiple views. It is available under the Apache License 2.0. There are three main use cases for Choosel:

• (Domain-specific) visual data exploration workbenches (example) that empower domain experts to visually explore, analyze and understand data from their domain. For example, Bio-Mixer helps biomedical researchers in exploring bio-medical ontologies and in understanding how concepts from different ontologies are related.
• Interactive infographics and telling stories with data (example) using multiple coordinated views. For example, users can explore earthquakes with more then 1,000 casualties since 1900 in our example visualization.
• (Application-specific) data visualization in GWT applications can leverage Choosel visualization components and view coordination features. Protovis-GWT (examples), a sub-project, can be used to create custom visualizations when more flexibility is required.

For more information on Choosel, please look at the presentation below, at our wiki and at http://lgrammel.blogspot.com/search/label/choosel'>lgrammel.blogspot.com. For updates on Choosel, please follow us on http://twitter.com/chooselmashups'>Twitter or http://www.facebook.com/pages/Choosel-Data-Visualization/170642902949853'>Facebook.

<wiki:gadget url="https://choosel.googlecode.com/svn/wiki/gadgets/choosel-modular-webbased-visualizations.xml" width="425" height="400" border="0" />