Fluid Network Studio is pipe network simulation software for calculating flow, pressure, and velocity in water, liquids, gases, and heat transfer systems. It runs entirely in a web browser without installation, allowing network design and analysis for flows, pressures, and temperatures without account creation or trial limits. The platform supports water, compressed air, process gases, hot lines, and slurries, along with pump, fan, and compressor sizing. Time-domain simulations track system behavior as tanks fill, valves move, and pumps cycle. The solver uses the Todini-Pilati global gradient and Darcy-Weisbach equations with precise mass and energy conservation. Features include compressible gas analysis, heat transfer modeling, and non-Newtonian fluid calculations. Libraries offer pipe standards, material roughness values, and fluid presets in SI and imperial units. Results are displayed as color-coded maps, charts, and exportable data formats.