MAESTROeX

At a glance

• Editor score
  6.6 / 10
• Pricing
  Open source
• Best for
  Astrophysics teams modeling stratified stellar flows
• Paid from
  Free
• Delivery mode
  Desktop
• Facts checked
  23 Sep 2026

• Where it wins

  • Models low-Mach flows with adaptive mesh refinement.
  • Supports general equations of state and nuclear reaction networks.
  • Uses MPI and tiled OpenMP, with output for yt, VisIt, and amrvis.

• Where it doesn't

  • Focused on low-Mach astrophysical flows rather than general-purpose physics.
  • Requires users to configure and compile problem-specific executables.
  • Runs on Linux; deployment is self-hosted rather than hosted.

Our verdict on MAESTROeX

MAESTROeX is an open-source scientific code for modeling low-Mach-number astrophysical flows, including convection in stars and stellar atmospheres. It is aimed at research teams studying stratified stellar flows, not users looking for classroom lessons or learner assessment. The code runs on Linux, can be run locally or on parallel computing systems, and uses adaptive grids to solve hydrodynamics. Its focus is specific: it is suited to simulations within its low-Mach astrophysics scope, rather than broad physics modeling across unrelated problem types.

Its numerical and physical modeling capabilities are the main reason to consider it. MAESTROeX supports general equations of state and nuclear reaction networks, and it can parallelize with MPI and tiled OpenMP. Simulation plotfiles are available for visualization and analysis, while diagnostic output includes velocity, temperature, and nuclear energy generation. AMReX and Microphysics are among its integrations; yt, VisIt, and amrvis support plotfile analysis and visualization. That combination gives teams working in this area a workflow oriented around simulation and scientific analysis rather than teaching or assessment.

MAESTROeX is self-hosted compiled software: users obtain the source code, configure it, and compile problem-specific executables before running simulations. That makes it a fit for teams prepared to work with scientific code and their own computing environment, not buyers seeking a hosted application or a ready-made lesson platform. Its open-source model and focused capabilities will appeal to astrophysics groups that need low-Mach flow simulation with adaptive grids. Teams needing a different flow regime, non-Linux platform, or a broader-purpose simulation environment should look elsewhere.

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MAESTROeX pricing

MAESTROeX fact sheet

MAESTROeX integrations

MAESTROeX lists 5 integrations on its own site.

• AMReX
• Microphysics
• yt
• VisIt
• amrvis

Alternatives to MAESTROeX

• COMSOL MultiphysicsA broad desktop environment for coupled physics, engineering models, and custom simulation apps.9.4
• AFAnsys FluentA deep CFD and HPC environment for demanding industrial simulation work.9.3
• SimScaleA broad browser-based multiphysics platform with flexible cloud workflows and tiered access.9.1

See all MAESTROeX alternatives →

Featured on iTechGuides

MAESTROeX is listed in our Physics Simulation Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update