Storm Water Management Model

EPA’s Storm Water Management Model (SWMM) was first developed in 1971, and has since undergone…

8 Alternatives To Storm Water Management Model

Delft3D

This webportal facilitates the Delft3D Open Source Community to come together to share knowledge…

Engineering Equation Solver

EES (pronounced ’ease’) is a general equation-solving program that can numerically solve…

HEC-RAS

HEC-RAS is the Hydrologic Engineering Center’s River Analysis System. This is a government-operated software which is designed for use analyzing rivers… read more.
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Sage Math

Sage is a free open-source mathematics software system licensed under the GPL.
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SpeedCrunch

SpeedCrunch. SpeedCrunch is a high-precision scientific calculator featuring a fast, keyboard-driven user interface. It is free and open-source software, licensed under the GPL. Download Documentation Donate .

Wolfram Mathematica

Mathematica has characterized the cutting edge in specialized processing—and gave the chief calculation environment to a large number of pioneers, instructors, understudies, and others around the globe.

WolframAlpha

WolframAlpha brings expert-level knowledge and capabilities to the broadest possible range of people—spanning all professions and education levels.

fxSolver

fxSolver is an free online math solver, equation library, graphing calculator and science/engineering problem helper. To get started, add some formulas, fill in any input variables and press “Solve.”