Compare the Top Free CFD Software as of December 2025

What is Free CFD Software?

CFD software is used to simulate fluid flow through a physical system. It uses numerical methods and algorithms to calculate complex flows involving heat transfer, turbulence and chemical reactions. CFD software is widely used in many industries, such as automotive and aerospace engineering, to identify potential design flaws before the product goes into production. Compare and read user reviews of the best Free CFD software currently available using the table below. This list is updated regularly.

  • 1
    ParaView

    ParaView

    Kitware

    ParaView is an open source, multi-platform data analysis and visualization application that enables users to build visualizations for analyzing data using qualitative and quantitative techniques. It supports interactive 3D exploration and programmatic data processing through batch processing capabilities. ParaView is designed to handle extremely large datasets using distributed memory computing resources, making it suitable for supercomputers analyzing terascale datasets as well as laptops for smaller data. The application features a client-server architecture to facilitate remote visualization of datasets and generates level-of-detail models to maintain interactive frame rates for large datasets. ParaView's extensible architecture is based on open standards, allowing for customization and integration with existing tools and workflows. It includes readers for various well-known file formats and offers more than 200 filters and tools for data processing and visualization.
    Starting Price: Free
  • 2
    OpenFOAM

    OpenFOAM

    OpenFOAM

    OpenFOAM is the free, open-source CFD software developed primarily by OpenCFD Ltd since 2004. It has a large user base across most areas of engineering and science, from both commercial and academic organizations. OpenFOAM has an extensive range of features to solve anything from complex fluid flows involving chemical reactions, turbulence and heat transfer, to acoustics, solid mechanics and electromagnetics. OpenFOAM is professionally released every six months to include customer-sponsored developments and contributions from the community. It is independently tested by ESI-OpenCFD's application specialists, development partners and selected customers, and supported by ESI's worldwide infrastructure, values and commitment. Quality assurance is based on rigorous testing. The process of code evaluation, verification and validation includes several hundred daily unit tests, a medium-sized test battery run on a weekly basis, and a large industry-based test battery-run.
  • 3
    CF-MESH+

    CF-MESH+

    Creative Fields Holding, Ltd.

    CF-MESH+ is the latest CFD meshing software version developed by Creative Fields. It comprises advanced meshing workflows with an easy-to-use front-end interface allowing for superior user experience and efficiency. It features a powerful set of tools and functionalities for generating quality CFD meshes in arbitrary complex geometries encountered within the industry. The software features a degree of robustness that will help you enhance your productivity and get a competitive advantage in your simulation efforts.
    Starting Price: $500
  • 4
    SimFlow

    SimFlow

    SIMFLOW Technologies

    SimFlow is a desktop Computational Fluid Dynamics (CFD) analysis software for Windows and Linux OS. It is based on OpenFOAM libraries, acting like an OpenFOAM GUI. It is a professional CAE package for engineers offering fully-featured 3D simulations. SimFlow is a powerful general-purpose CFD software. It combines an intuitive graphical user interface with the advantages of the open-source OpenFOAM® libraries. Download SimFlow and use it for free in an evaluation mode to solve the most complex problems you face as an engineer, scientist or student. Maybe you use CFD software on a daily basis or maybe just want to start your adventure. Install SimFlow, rediscover the CFD world without any time limit and enjoy powerful fluid simulation software.
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