In addition to projects and training for clients Just has initiated and participates in a number of Open Source projects, sometimes as part of research or interest, other times out of a need to develop a tool. Below is an overview of the main projects. Each project has its own project page. The most recent projects start from the top.
See inspire-foss.org.
Develop components for transformation and web services (WMS, WFS, CSW) that comply with the pan-European INSPIRE directive using Free and Open Source for Geospatial (FOSS4G). This project is hosted at code.google.com/p/inspire-foss.
This project was started as part of work on INSPIRE for the Dutch Land Registry (Kadaster), further propagated with deegree-developers from lat/lon GmbH.
See heron-mc.org.
Develop components/widgets for building advanced geo web-clients using the GeoExt framework. This project is hosted at code.google.com/p/geoext-viewer.
This project was initally co-developed with Geodan, in particular to build a viewer within the ESDIN best practices for INSPIRE.
See www.geoskating.com and the Google Group (Dutch)
Generate interactive, multimedial skate-maps through GPS and mobile phones. Upcoming is an Android application.
One of my dearest projects. Involves a whole range of Java-technologies (J2ME, J2EE). See also a Dutch newspaper (Volkskrant) article
See www.geotracing.com.
Create a generic platform for remote tracklogging and real-time tracing through GPS with mobile phones. See also GeoTracing example applications: www.geoskating.com, www.geosailing.com and a geodrawing game.
See www.pushlets.com.
A HTTP-based public/subscribe framework. Event push to browser clients without using client-side Java. Pushlets are told to be the first (1999) implementation for the principles of COMET (see ajaxian.com).
This project seems to attract many developers since a publication in JavaWorld March, 2000.
See the KeyWorx homepage. This project ran until 2007.
Develop a multi-user/multi-service/multi-channel application platform.
KeyWorx was developed at Waag Society in Amsterdam.
See www.justobjects.org/xbook.
Develop a toolset to generate HTML documentation from XML as a lightweight alternative to DocBook.
This site has been written and generated using XBook...
See www.justobjects.org/cowcatcher and SourceForge
Develop a toolset to generate HTML course materials from XML and provide content for Java training materials as a reusable repository of modules and lessons.
This project has helped us to quickly assemble materials and provide training to our clients. There is a lot of free stuff like complete online Java courses, so check it out.