Open Source Java Data Modeling Software

MADS (Multipurpose Agricultural Data System) is a free open-source tool for modelling and analysis of agricultural activities - crops, livestock, forestry and others - in developing countries, at sector, regional or project level.

PSIGHOS is a Java-based simulation library. PSIGHOS is focused on the simulation of business processes and comprises a parallel core so to reduce the execution time for large models.

VisualPerspective is a modeling and diagram creation tool. It enables to create free diagrams but also semantic oriented ones (for instance UML diagrams), in order to run automatic processing (transformations, exports, parsing). There is currently no installer, so you should follow this procedure : http://enzweiler.info/visualperspective/002-installation.html You are very welcome to report any issue with VP.

Wolfgang is a lightweight tool that allows users to easily create and edit Petri nets and check them against general and workflow specific net properties. Specifically, Wolfgang supports full PNML conform editing functionality of Place-Transition Nets (P/T-Nets) and Colored Petri Nets (CPN) as they are defined in the SEPIA package. Its simple and easy to use interface allows to quickly create Petri nets from scratch, edit them graphically in many ways, store and even export them as PDFs. Use Wolfgang to smoothly create the Petri net you want! A user guide and a documentation can be found under http://doku.telematik.uni-freiburg.de/wolfgang.