ANSYS Fluent - ANSYS engineering simulation and 3D design software delivers product modeling solutions with unmatched scalability and a comprehensive multiphysics foundation.
STP Viewer - Free STP Viewer - free software that lets you view 3D STEP files (.stp, .step file format).
Simscale CFD - SimScale CFD is a cloud-based leading CAE platform that offers access to CFD, FEA, and thermodynamics simulation capabilities 100% via a standard web browser.
A360 VIEWER - Free online CAD Viewer
Autodesk Fluid Flow - Autodesk Fluid Flow is an industry-leading fluid dynamics software that helps to enhance product performance and reliability.
Glovius - Extensible & customizable 3D viewer, for consumption of product design data.