States
Idle, process, wait, down, blocked, reserved, occupied.
Browser-Based Industrial Simulation
FACT SIM
Real World Discrete Event Simulation
Model factories, production lines, AGVs, logistics, hospitals, and other real-world systems as discrete events with second-level precision.
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The world moves through events and state transitions.
“The world can be represented by state transitions and events.”
Factories, robots, cars, AGVs, and people are all systems of connected events. FACT SIM models this structure directly so you can validate decisions before deployment.
Factories
Robots
Cars
AGVs
People
Events
Arrivals, handoffs, releases, merges, splits, routing, downtime.
Decisions
Validate the reason a line meets takt or fails before equipment is purchased.
Built for analysis, not presentation-only animation.
Node-Based Modeling
Build systems visually using a graph model.
Discrete-Event Engine
Simulate state transitions and event timing accurately.
Second-Level Precision
Analyze process flow with practical temporal resolution.
Browser Native
Run instantly with no installation or license server.
Lightweight
Fast iteration on everyday laptops and workstations.
Open Source
Transparent architecture for extension and audit.
Model real systems with discrete-event logic.
Factory Production Lines
Validate takt, throughput, and bottleneck risk early.
AGV Logistics
Evaluate route, carrier, and handoff synchronization.
Traffic Simulation
Explore event-based flow behavior under constraints.
Hospital Patient Flow
Model arrivals, queues, and resource allocation.
Open source, inspectable, and easy to extend.
FACT SIM is built as an open platform for industrial and operational simulation. Explore the code, open issues, fork the modeler, and adapt it for your own domain.
Explore Repository