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Discover interactive simulations and professional tools for every level
Featured Simulations
Activation Functions & Normalization Gallery
Interactive gallery of activation functions and normalization layers for neural networks. Compare ReLU, GELU, SiLU, Mish, SwiGLU with draggable plots and derivative overlays. Visualize LayerNorm vs RMSNorm vs BatchNorm, signal propagation through layers, and gradient flow. See which functions power LLaMA, GPT-2, and BERT.
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LLM Scaling Laws Visualizer: Understanding Chinchilla-Optimal Training
Interactive visualization of neural scaling laws for LLMs. Explore Kaplan and Chinchilla scaling — how model size, dataset size, and compute budget determine test loss. Calculate compute-optimal configurations, visualize iso-loss contours, and see where GPT-3, Chinchilla, LLaMA-3, and Qwen 2.5 sit on the scaling curve.
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Drivetrain Design Suite — Gear Train, Shaft, Bearing & Key/Press-Fit Calculator
Comprehensive drivetrain design tool covering gear trains (spur, compound, planetary, worm), shaft sizing (ASME/Goodman), key design (ANSI B17.1), interference fits (Lame equations), and bearing selection (ISO 281). All modules interconnected with automatic data flow.
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Scaffolding Calculator: OSHA-Compliant Load & Design Tool
OSHA 1926.451-compliant scaffolding calculator with animated scaffold assembly, load distribution, tie spacing analysis, and base plate bearing checks. Covers frame, tube-and-clamp, system scaffold, and mobile towers.
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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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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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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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Root Locus Plotter
Plot root locus diagrams interactively with our free online simulator. Adjust gain K, place poles and zeros, and visualize closed-loop stability in real-time. Ideal for control systems students and engineers.
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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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