Ontopia: The Topic Map Company


TM4J is a suite of Java packages which provide interfaces and default implementations for the import, manipulation and export of Topic Maps encoded in an XML format. TM4J is available in source or compiled JAR form. The source form of the package includes experimental code for viewing and editing topic maps using an innovative visualisation tool from TheBrain. Both the source and compiled versions of TM4J include command line utilities for merging topic maps and calculating statistics about topic maps.

TM4J is housed at www.techquila.com, where you can also find some sample topic maps.