TM4J - A Topic Map Engine For Java

TM4J is a small suite of Java packages which provide interfaces and default implementations for the import, manipulation and export of Topic Maps encoded to conform to the XTM (XML Topic Maps) DTD.

Features of the TM4J engine include:

• An object model which supports all of the constructs of the XTM 1.0 specification
• A set of simple command line tools for manipulating and measuring topic maps.
• A command-line utility for merging two or more topic maps automatically.
• Ability to persist topic map data in an object-oriented or relational database.
• Import of XTM and Ontopia's LTM (Linear Topic Map) interchange formats
• Export of XTM interchange format topic maps.
• An implementation of the tolog topic map query language.
• An implementation of the TMAPI standard topic map programming API.
• Open-source under the Apache License.

The latest stable release is TM4J 0.8.0 available in both binary and source forms from the TM4J project page at Sourceforge. Developers may instead choose to get the latest version of the source code directly from the Sourceforge CVS repository as there are many committed changes to the source tree which will appear in the next release.

TM4J is now a co-operative team development. The project website is here, although it is bare bones at the moment, you will find links to both the project page and to a developer's tutorial for TM4J.