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Discover interactive simulations and professional tools for every level
Featured Simulations
Preventive & Predictive Maintenance Optimizer
Free maintenance strategy optimization tool. Model Weibull failure distributions, compare PM vs PdM vs run-to-failure costs, calculate optimal maintenance intervals, run Monte Carlo cost simulations, and compute Risk Priority Numbers. For reliability engineers and maintenance planners.
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Packed Tower Pressure Drop Flooding Calculator: GPDC Hydraulic Design & Rating
Professional packed tower hydraulic calculator using Strigle-modified GPDC (Generalized Pressure Drop Correlation). Calculate pressure drop, flooding velocity, capacity factor, and operating range for random and structured packings. Includes Eckert/Strigle/Kister correlations, 30+ packing types with Fp data, liquid holdup estimation, HETP comparison, column sizing, animated column cross-section with gas/liquid flow visualization, and export reports. References Perry 9th Ed, Strigle 1994, Kister 1992, and GPSA Engineering Data Book.
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Inference Serving Capacity Planner: GPU Sizing & Cost Optimization for LLM Deployment
Professional AI inference infrastructure planning tool. Size GPU clusters (A100, H100, L40S, B200), optimize throughput vs latency tradeoffs, estimate cost per 1K tokens, analyze quantization impact (FP16/INT8/INT4), plan KV cache memory, compare tensor vs pipeline parallelism, and simulate auto-scaling strategies with animated request flow visualization.
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Fine-Tuning Cost & Dataset Sizing Tool: GPU Hours, Cloud Costs & LoRA/QLoRA Planning
Professional LLM fine-tuning cost estimator and dataset sizing tool. Plan fine-tuning jobs with GPU hour estimates, cloud costs (AWS/GCP/Azure), VRAM requirements, and training time projections. Compare LoRA vs QLoRA vs full fine-tuning. Supports Llama, Mistral, GPT, Phi, Qwen models. Includes batch size optimizer, cost-per-quality curves, and exportable training plans.
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Solar System Simulator
Free 3D solar system simulator with accurate orbital mechanics. Zoom into planets, track real orbital periods, and compare sizes and distances. Includes all 8 planets, dwarf planets, and moons. Perfect for astronomy students. Try it free!
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Seasons Simulator - Earth Axial Tilt & Day Length
Free seasons simulator showing how Earth's 23.5° axial tilt creates seasons. Visualize solstices, equinoxes, day length changes, and sunlight angles throughout the year.
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Sorting Algorithm Visualizer
Free sorting algorithm visualizer. Compare bubble sort, merge sort, quick sort, and heap sort step-by-step. Track comparisons, swaps, and time complexity O(n log n) vs O(n²).
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Cell Division Mitosis Simulation - Interphase vs Prophase Comparison
Explore cell division with our free interactive mitosis simulation. Step through each phase and visualize chromosome separation. Perfect for biology students. Try it now!
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Bridge Stress Simulator
Explore bridge stress with our free interactive truss simulator. Adjust loads and bridge types to visualize tension and compression. Perfect for engineering students. Try it now!
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Simple Pendulum Simulator
Free pendulum period calculator using T=2π√(L/g). Adjust length, gravity, and amplitude to explore simple harmonic motion. Includes energy graphs and data collection mode.
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Projectile Motion Simulator
Free projectile motion calculator and simulator. Calculate range, max height, and flight time. Adjust launch angle and velocity to visualize trajectories. Perfect for physics students.
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Earthquake Wave Propagation Simulator
Free earthquake wave simulator. Visualize P-wave and S-wave propagation from any focal depth. Calculate arrival times, seismic velocities, and amplitude decay. Explore reflection and refraction at layer boundaries. Perfect for geology students. Try it free!
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Electric Field Visualizer
Free electric field simulator using Coulomb's law F=kq₁q₂/r². Place positive and negative charges to visualize field lines, equipotential surfaces, and calculate field strength.
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Mendelian Genetics Breeding Simulator
Explore Mendelian genetics with our free interactive breeding simulation. Adjust traits and generations to visualize inheritance patterns. Perfect for biology students. Try it now!
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Double Pendulum Chaos Simulator
Free double pendulum chaos simulator. Visualize sensitive dependence on initial conditions and the butterfly effect. Compare trajectories, track energy, and explore Lagrangian mechanics.
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PID Controller Tuning Simulator
Free PID controller tuning simulator. Adjust proportional, integral, and derivative gains to optimize step response. Visualize overshoot, settling time, and steady-state error in real-time. Perfect for control engineering students. Try it free!
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