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Wandora is a general purpose information extraction, management, and publishing environment based on TopicMaps and Java. Wandora has several data storage options, rich data extraction, import and export capabilities and embedded server.
Graph visualization using hyperbolic geometry (hyperbolic trees, but also general graphs).
Applications cover web site structures, topicmaps, organisational charts and wikis.
TopicMapTools allows the creation, manipulation and visualization of XML TopicMaps. It is based on the TM4J framework. The editor can be used in genealogy for the visualisation of e.g. family trees.
HyperSpider (Java app) collects the link structure of a website. Data import/export from/to database and CSV-files. Export to Graphviz DOT, Resource Description Framework (RDF/DC), XML TopicMaps (XTM), Prolog, HTML. Visualization as hierarchy and map.
Nexist is being developed based on a few hypotheses regarding TopicMaps (XTM) as an interface to a collaborative knowledge repository system. Nexist is a reference implementation for further collaborative development.