The HELYX Open Source native GUI for OpenFOAMĀ®

HELYX-OS is an Open Source Graphical User Interface designed to work with the latest version of OPENFOAMĀ®. The GUI is developed by Engys using Java+VTK and delivered to the public under the GNU General Public License.


Supported Solvers

  • Incompressible flows: simpleFoam, MRFSimpleFoam, porousSimpleFoam, pimpleFoam, pisoFoam
  • Compressible flows: rhoSimpleFoam, rhoPimpleFoam, rhoPorousMRFSimpleFoam, rhoPorousMRFPimpleFoam
  • Heat transfer and buoyancy-driven flows: buoyantBoussinesqSimpleFoam, buoyantBoussinesqPimpleFoam, buoyantSimpleFoam, buoyantPimpleFoam
more info

Software Capabilities

  • Create and run new CFD cases from scratch in serial or parallel
  • Native support for OPENFOAMĀ® dictionary files (load existing cases by reading settings, directly from the available project text files)
  • Control snappyHexMesh, including geometry display and execution within the GUI
  • Comprehensive case definition module, including controls for physical models, turbulence, etc.
  • Boundary conditions, field initialisation and solver execution within the GUI

Licensing and Support

HELYX-OS is freely available and delivered to the public under the GNU General Public License. The source code, Linux binaries and installation instructions for HELYX-OS are all available from the project page in The code is offered for free without formal user support or documentation.


To request a price quote for a HELYX-OS support contract, please call us and ask for sales, or send us an e-mail.