Simulation
Gazebo
Developed by Open Robotics
Gazebo is an open-source robot simulator with physics, sensors, rendering and integration tools.
Open sourceROS 2
Last verified:
Software category
Robot Simulation Software: Physics, ROS 2, Sensors and AI Tools
Compare robot simulators by physics, sensor models, ROS 2 integration, synthetic-data workflows, headless testing, hardware needs and sim-to-real use case.
How to compare tools in this category
Compare operating-system support, robot and sensor integrations, license terms, documented installation methods and the maintenance activity of the official project or vendor. A feature listed by one tool should not be assumed for another.
Simulation decision matrix
Pick a simulator from the experiment you need to run
No simulator is "most realistic" for every robot. A navigation team, a contact-rich manipulation team, and an autonomous-driving team need different physics, sensors, assets, compute, and integration. Verify the current official documentation for the version you plan to deploy.
| Tool | Strong fit | Verify before committing |
|---|---|---|
| Gazebo | ROS 2-centered robot and sensor simulation | ROS 2 bridges, physics engine/configuration, sensors, headless workflow, supported Gazebo/ROS pairing |
| NVIDIA Isaac Sim | GPU-based robotics simulation, perception, synthetic data, Isaac Lab workflows | GPU/driver requirements, RTX and physics sensors, ROS 2 bridge, asset pipeline, headless deployment |
| MuJoCo | Articulated-body dynamics, control and reinforcement-learning research | Contact model, model format, renderer needs, batching/workflow integration, robot-stack bridge |
| Webots | Cross-platform robot modeling, controllers, education and research | Controller language, robot models, ROS 2 integration, sensor support, export/deployment workflow |
| CoppeliaSim | General-purpose scene simulation and scripted robot workflows | Remote APIs, dynamics backend, ROS 2 integration, scene architecture, licensing for deployment use |
| PyBullet | Lightweight Python physics experiments and prototyping | Contact fidelity needed for the task, project maintenance, asset support, determinism and integration work |
| CARLA | Autonomous-driving environments, traffic and vehicle sensors | Map/traffic needs, sensor suite, GPU requirements, ROS integration, domain fit; not a general manipulator simulator |
Sim-to-real checklist: calibrate what can break the controller
Treat simulation as a test instrument. Record the parameters that materially change success, compare them against hardware, and keep the mismatch visible instead of hiding it behind prettier rendering.
Mass & inertia
Use measured or CAD-derived link mass, center of mass, and inertia; default values can make a stable controller look better than the real robot.
Joints & actuators
Match joint limits, friction, damping, velocity, torque/force saturation, gearing, controller rate, and command delay.
Contacts
Calibrate friction, restitution, compliance, gripper contact, collision geometry, and solver settings against physical tests.
Sensors
Match field of view, update rate, resolution, noise, latency, clipping, blind spots, and mounting transforms.
Timing
Run the same control and perception rates used on hardware; expose dropped frames, network delay, and asynchronous sensors.
Validation
Replay the same test cases in simulation and on hardware, then randomize only parameters that represent plausible physical variation.
Verified source
Simulation
Webots
Developed by Cyberbotics
Webots is a desktop robot simulator used for education, research and controller development.
Open sourceROS 2
Last verified:
Simulation
CoppeliaSim
Developed by Coppelia Robotics
CoppeliaSim is a general-purpose robot simulation platform with scripting, remote APIs and multiple physics engines.
Free and commercial editionsROS 2
Last verified:
Simulation
NVIDIA Isaac Sim
Developed by NVIDIA
NVIDIA Isaac Sim is a robotics simulation application built on NVIDIA Omniverse for synthetic data, sensors and robot development.
FreeROS 2
Last verified:
Simulation
MuJoCo
Developed by Google DeepMind
MuJoCo is an open-source physics engine designed for model-based control, optimization and robotics research.
Open source
Last verified:
Simulation
PyBullet
Developed by Bullet Physics
PyBullet provides Python bindings and robotics examples for the Bullet physics engine.
Open source
Last verified:
Simulation
CARLA
Developed by CARLA project
CARLA is an open-source simulator for autonomous driving research with configurable towns, sensors and traffic actors.
Open source
Last verified:
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