SIM.JS is a general-purpose Discrete Event Simulation library fully capable of running in a Web browser. It provides constructs for creating Entities which are the active actors in a system, and encapsulates the state and logic of a system's components. Entities contend for resources, which can be Facilities (supports FIFO, LIFO with preemption and Processor Sharing service disciplines), Buffers, and Stores. Entities communicate by waiting on Events or by sending Messages. Statistics recording and analysis is provided by Data Series Statistics, Time Series Statistics, and Population Statistics. A random number library generates seeded random variates from various distributions, including uniform, exponential, normal, gamma, Pareto, and others.
Sea Ice is software for modeling the microwave emissivity of sea ice. It includes two plane-parallel radiative transfer models: a Monte Carlo ray tracing simulation that models ridged ice, and thermodynamic models that can be used to generate input to the emissivity models in the form of temperature and salinity profiles. It is written in C++ and Interactive Data Language (IDL). It has been used to generate results for several papers on sea ice emissivity.
PyParticles is a particle simulation toolbox entirely written in Python. It simulates a particle-by-particle model with the most popular integrations methods, including Euler, Runge Kutta, and Midpoint. It represents the results on an OpenGL or Matplotlib plot, and offers an easy-to-use API.
ARS (Autonomous Robot Simulator) is a physically-accurate simulation suite for research and development of mobile manipulators and, in general, any multi-body system. It is modular, easy to learn and use, and can be a valuable tool in the process of robot design, in the development of control and reasoning algorithms, and in teaching and educational activities. It will encompass a wide range of tools spanning from kinematics and dynamics simulation to robot interfacing and control.
yacts, yet another continuous time simulator, uses J+ to interpret scripts, defining systems of ordinary differential equations, which it solves. J+ is a functional non-imperative simulation language with lazy evaluation, based on the J programming language, a dialect of APL. A program in J+ is a collection of (possibly functional) J assignment statements, just like a set of formulae on a sheet of paper. The interpreter, implemented as a software library, knows the interdependencies between these formulae and is able to compute any of the defined quantities with minimal effort, keeping track of the values which were already computed. The driver program (such as yacts) may ask the interpreter to compute certain quantities and set the values for others (propagating the changes to dependents).
Speed Dreams is a fork of the open racing car simulator Torcs. It aims at implementing exciting new features, cars, tracks, and AI opponents to make a more enjoyable game for the player, and at constantly improving visual and physics realism. Featuring 44 cars, 44 tracks, and three first-class AI opponents, Speed Dreams is suitable for use as a racing game, as a serious race simulator, and for scientific research.
Finesse is a numeric simulation for laser interferometers using the frequency domain and Hermite-Gauss modes. It is easy to use for students. For basic use, including graphical output, no commercial software is required. The implemented physics are well documented in a 180-page manual. Simple examples are provided. Finesse can be used to compute a great variety of interferometer signals for control systems, including longitudinal control, alignment control, and thermal compensation.