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Planimetric Geometry (JCabri) is a rewrite of Cabri Geometry in Java. It provides solution for doing geometric constructions in 2D and exporting them as an animated GIF or Java applet.
Scene Beans is an animation framework for Java2D. Scene Beans lets the programmer create animations by composing Java objects in a declarative style and hides the details of exactly how that animation is animated and rendered.
TouchGraph provides a set of interfaces for graph visualization using force-based layout and focus+context techniques. For now only older code is available, but we are planning to release new versions as well.
Atavi is an interactive genealogical data visualization tool. It uses XSLT to transform XML data into SVG (Scable Vector Graphics) images. Deploy it as a Java servlet and explore visualizations from a browser that supports SVG. GEDCOM import is planned.
FreeFS is an implementation of the OpenGIS Consortium's Web Feature Server v0.0.14 (WFS) specification. FreeFS is intended to serve as a free, fast, intuitive, and comprehensive geographic vector data translator for geographic 'web service' applications.