Software provided under a license that permits users to study, change, and improve the software. Often, software is free of cost and will be reliable and accurate if it is widely distributed for improvement by a large group of diverse developers.
Open-Source wrappers CFD
Software wrapped into more user friendly environments and equipped with additional software such as pre- and post-processors.
CAD integrated CFD
With the popularity and mass use of CAD software, the CFD add-ons integrated into these 3D modeling platforms are widely used. Capabilities include the solving of steady-state, single-phase, non-reacting flow problems with an ease-of-use focus.
Software targeted to niche markets with specialized functionality.
While this software costs more than others, they enable users with meshing and post-processing capabilities and can input from, and output to, all of the popular file types and formats.