Robert Cerny has released version 4.1 of Topincs, a Topic Maps-based wiki and knowledge management tool.
This version allows ordering of fields on topics, adds some Topincs-specific constraints to TMCL, and improves the Admin page.
For more information, please see the announcement.
Jan Schreiber has released the first preview of a Topic Maps engine written in JavaScript, called tmjs. It’s a lightweight engine independent of other JavaScript libraries and offers a TMAPI 2.0-like API. The idea is to make it possible to write Topic Maps applications that run entirely in the browser.
The PHPTMAPI project has released version 2.0 of the API, following the release of TMAPI 2.0. The QuaaxTM Topic Maps engine already implements version 2.0 of the API.
Robert Cerny has released version 4 of his Topincs Topic Maps-based wiki and knowledge management tool. A major change in this version is that it now uses TMCL (according to the latest draft) to represent the topic map schema. As far as we are aware, this is the first TMCL implementation to be released. For more information, please see the announcement.
HypergraphDB is a hypergraph database based on the Berkeley DB released as open source by Kobrix. Interestingly, HypergraphDB contains a Topic Maps implementation based on HypergraphDB conformant with Java TMAPI 1.0.
Lars Marius Garshol has published a presentation on the Ontopia blog about the challenges of building semantic applications in object-oriented programming languages. The problem he describes is similar to that faced when building applications with relational databases, known as the object/relational impedance mismatch.
nexxor GmbH released version 1.0 of topicWorks, their Topic Maps-based information management system. topicWorks contains a core engine, a browser, a search tool, a graphical visualizer, Microsoft Office integration, and domain-specific modules. For more information, see their web site.
The TMAPI project has released release candidate 2 of the TMAPI 2.0 standard API for Java Topic Maps engines. The main change in this release is a change in the semantics of the equals() and hashCode() methods on all Topic Maps objects. A final 2.0 release of TMAPI is expected shortly.
Clazzes.org are developing a Topic Maps engine they call Clazzes.org TopicMaps. It’s a Java implementation of TMAPI (2.0?) which stores the topic map in a relational database. The engine is still under development.