# OpenModelica/OpenModelica

OpenModelica is an open-source Modelica-based modeling and simulation environment intended for industrial and academic usage.

Repository: https://github.com/OpenModelica/OpenModelica
Canonical: https://ross.abutalabs.com/products/openmodelica
Homepage: https://openmodelica.org
Language: Modelica
License: NOASSERTION
License Family: other
Topics: compiler, modelica
Last push: 2026-08-26T15:44:53+00:00

## Health v2 (maintenance only)
Score: 96/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 91, longevity 100
- inputs: {"age_days": 4140, "days_push": 7, "days_rel": 62, "gap_med": 25, "n_releases_24m": 24}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1388, forks 398 (observed 2026-08-28T04:04:35.253864+00:00)

## What it is
OpenModelica is an open-source Modelica-based modeling, compilation, and simulation environment for industrial and academic use. It includes the OMCompiler, the OMEdit graphical interface, and OMSimulator for FMI and SSP-based co-simulation.

## Use cases
- simulate physical systems described in Modelica
- compile and run Modelica models
- perform FMI co-simulation of coupled models
- teach equation-based object-oriented modeling
- optimize and run sensitivity analysis on models
- develop Modelica-compliant libraries

## When to choose
- you need a free, open-source Modelica modeling and simulation tool
- you want FMI/SSP co-simulation support
- you need both a GUI (OMEdit) and scripting APIs for simulation workflows
- you are doing academic research or teaching in system modeling

## When to avoid
- you need commercial support or certified toolchains for safety-critical workflows
- you only need lightweight block-diagram simulation without the Modelica language
- you require a purely web-based modeling environment

## Facets
- artifact type: application
- maturity: active
- function: simulation, compiler, gui, interpreter
- domain: simulation, education, developer-tools
- platform: windows, cross-platform
- tags: modelica, fmi, co-simulation, physical-modeling, equation-based-modeling, systems-engineering, engineering, linux, macos

## Member repositories
- OpenModelica/OpenModelica (main) score 96

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:35.253864+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:39:45.376223+00:00, confidence not recorded.
  - readme: https://github.com/OpenModelica/OpenModelica (fetched 2026-08-28T04:04:35.253864+00:00, sha 3e9c4fd61424)
  - homepage: https://openmodelica.org (fetched 2026-08-29T11:55:00.454792+00:00, sha 29a93e54da15)
  - site_page: https://openmodelica.org/useresresources/userdocumentation (fetched 2026-08-29T11:55:00.463885+00:00, sha 0c43cc66efbd)
  - site_page: https://openmodelica.org/developersresources/devdocumentation (fetched 2026-08-29T11:55:00.465738+00:00, sha b91f7bd303e2)
- Data as of 2026-08-30T08:39:29.467469+00:00.