Aspen Plus - Maximize profits using a plant-wide simulation solution that combines unparalleled accuracy and engineering collaboration with time-saving workflows.
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
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."
PTC Mathcad - PTC Mathcad PTC Mathcad is Engineering Math Software That Allows You to Perform, Analyze, and Share Your Most Vital Calculations.
Niftyflow.rocks - Create multilingual price quote, ROI, and finance calculators with drag & drop. Easy to embed on any website. No developer or coding skills required. Try our easy calculator builder for free on our website - instant access, no signup required.
DWSIM - DWSIM is an open-source CAPE-OPEN compliant chemical process simulator for Windows and Linux.