ROOT alternatives

3 tools to consider instead of ROOT, shown against it.

ROOT Astropy LAMMPS GROMACS
Vendor CERN Astropy Project (community) Sandia National Laboratories (US DOE) GROMACS development team (academic consortium)
Pricing model Open source + paid options Open source + paid options Open source + paid options Open source + paid options
Free tier Yes Yes Yes Yes
Deployment Self-hosted Self-hosted Self-hosted Self-hosted
Open source Yes (LGPL-2.1) Yes (BSD-3-Clause) Yes (GPL-2.0) Yes (LGPL-2.1)
Best for Particle and nuclear physicists processing and analyzing very large experimental event datasets. Astronomers and astrophysicists writing Python analysis code who need standardized coordinates, units and file handling. Computational materials scientists and chemists running large-scale atomistic molecular dynamics simulations. Structural biologists and biophysicists simulating proteins, membranes and other biomolecules at speed.
Pricing

Free and open source; developed and maintained by CERN.

Pricing has not been verified yet — see the vendor's site.

Free and open source; supported by grants and institutional contributions.

Pricing has not been verified yet — see the vendor's site.

Free and open source; developed with US Department of Energy funding.

Pricing has not been verified yet — see the vendor's site.

Free and open source; maintained by an academic development consortium.

Pricing has not been verified yet — see the vendor's site.

Features
  • Columnar TTree data format for large event datasets
  • C++ and Python (PyROOT) interfaces
  • Statistical fitting and analysis libraries
  • 2D/3D histogramming and visualization
  • RDataFrame for parallel data processing
  • Used by major LHC experiment software stacks
  • Cross-platform (Linux, macOS, Windows)
  • FITS file reading and writing
  • Celestial coordinate transformations
  • Physical units and constants handling
  • Time-scale and calendar conversions
  • Cosmological calculations
  • Table and array data structures
  • Ecosystem of affiliated astronomy packages
  • Classical molecular dynamics simulation
  • MPI and GPU parallelization for HPC scale
  • Wide range of interatomic potentials/force fields
  • Extensible via custom C++ packages
  • Scriptable plain-text input files
  • Supports solids, liquids, polymers and biomolecules
  • Active research-community contributions
  • Biomolecular molecular dynamics simulation
  • CPU/GPU-accelerated performance
  • Built-in trajectory analysis tools
  • Wide biomolecular force field support
  • Scales from workstation to HPC cluster
  • Free energy calculation methods
  • Active academic development community

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