Woo is a flexible and extensible open-source code used for (mostly) Discrete Element (DEM) simulations. It is geared towards non-trivial, challenging scenarios − sieving, segregation, conveyors, membranes and others. It is also a solid framework for developing new types of simulations, offering non-trivial services such as tight C++/Python integration, data persistence, GUI inspection, visualization contexts, parallelism, batch running, portability.
The computational core is written in c++ (plus Python scriptability) and provides many DEM algorithms, integrated visualization & reporting facilities, outputs suitable for external tools (e.g. Paraview), batch simulations; supports Linux (primary platform) and 64bit Windows. As open-source, it may be used on unrestricted number of CPUs/computers;
We, the people behind Woo can also tweak everything for you: for a negotiated price, you obtain a package customized to your problem, ready to be run by engineers without months of programming training. This package will consist of preprocessor tailored to your particular problem, plus the solver.
User-level documentation is here.