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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
Simulator of G/G/k queue systems used in computer networks.
QueueSimulator is a free software which aims to simulate primarily
G/G/k queueing systems that are used in computer networks. But
it can be used to simulate practically any stable queue system.
PerMoTo is a Performance Modelling Tool suite for decision support in the capacity and performance management of distributed transaction processing systems based on Queueing Theory and Discrete Event Simulation.
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Multi-user online service implementation for web-based factory modeling. Rich user interface and scalable backend system to build online simulation services on or do other processing of factory data. Demo at https://fabriksimulation.ipa.fraunhofer.de