Shadow is a unique discrete-event network simulator that runs real applications like Tor, and distributed systems of thousands of nodes on a single machine. Shadow combines the accuracy of emulation with the efficiency and control of simulation, achieving the best of both approaches.

Multi-player spaceship bridge simulator. Captain your starship through adventures with your friends. See https://smcameron.github.io/space-nerds-in-space

libMesh github repository

An interactive ecosystem and evolution simulator written in C and OpenGL, for GNU/Linux.

Schematic capture and circuit simulator

2D physics header-only library for videogames developed in C using raylib library.

The ChameleonMini is a versatile contactless smartcard emulator compliant to NFC. The ChameleonMini was first developed by KAOS. This is NOT the official repo for KAOS's ChameleonMini. For further information see the Getting Started Page

Flashy 2D fluid simulations experiments.

qd python library for CAE (currently mostly LS-Dyna)

PLUTO-GPS-SIM generates a GPS baseband signal IQ data stream, which is then transmitted by the software-defined radio (SDR) platform ADALM-Pluto.

Rensselaer's Optimistic Simulation System

A Full-Newton Finite Element Program for Free and Moving Boundary Problems with Coupled Fluid/Solid Momentum, Energy, Mass, and Chemical Species Transport

Code for "DeepDRR: A Catalyst for Machine Learning in Fluoroscopy-guided Procedures". https://arxiv.org/abs/1803.08606

Koszek-Matyja Network Simulator. Specify network architecture in a simple configuration file and run network simulations.

Simulating on GPU using Material Point Method and rendering.

The Real-Time World Generation projekt aims to provide a tool for world/terrain generation based on prozedural algorithmes and cellular automata simulation.

qTorch (Quantum Tensor Contraction Handler) https://arxiv.org/abs/1709.03636 -> for quantum simulation using tensor networks

Collection of quadrupedal robots configured to work in CHAMP development framework

The home of the McStas (neutrons) and McXtrace (x-rays) Monte-Carlo ray-tracing instrument simulation codes.

Player/Stage SLAM

A uniform library wrapper for input from V4L2,Freenect,OpenNI,OpenNI2,DepthSense,Intel Realsense,OpenGL simulations and other types of video and depth input..

IGoR is a C++ software designed to infer V(D)J recombination related processes from sequencing data. Find full documentation at:

QEMU based emulation library for micro-architectural simulation (ARM64 and x86)

A freeware hobby project simulation for X-Plane of the B777-300ER

A complete 6DOF helicopter simulation (physics engine + visualization)

Model reduction library with an emphasis on large scale parallelism and linear subspace methods

3D sound propagation simulator using adaptive rectangular decomposition method.

Actuarial functions and heavy tailed distributions for R

PLUTO-GPS-SIM generates a GPS baseband signal IQ data stream, which is then transmitted by the software-defined radio (SDR) platform ADALM-Pluto. Windows 32bit version.

An R package for calling the Epanet software for simulation of piping networks.