Java Modelling Tools is a suite of scientific tools for performance analysis and modelling using queueing theory and colored stochastic Petri nets. Models are solved either with analytical, asymptotic or simulation methods; workload characterization tools are also included in the suite.
See the project website for more details: http://jmt.sf.net
SQS is the Simple Queueing System that allows jobs to be run in sequence on one or more machine. The queues can be inspected, jobs can be deleted from queues even when running, and jobs can be held. The latest version as at the end of 2011 is sqs-3.1.
Collection of libraries and examples of multithreaded and
distributed framework in Java for queueing jobs to local agents or
remote agents via RMI. The purpose is to help teach introduction to
multithreaded and distributed servers.