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

Free (standard conforming) library to model mechanical (1D/3D), electrical (analog, digital, machines), magnetic, thermal, fluid, control systems and hierarchical state machines. Also numerical functions and functions for strings, files and streams are included.

Modelica Buildings library

OpenModelica Microgrid Gym (OMG): An OpenAI Gym Environment for Microgrids

A standard library of components to model the world and beyond

Specification of the Modelica Language

A library of power system component models written in the Modelica language that can be used for power system dynamic analysis, such as phasor time-domain simulations.

a rust-native Modelica compiler for fast, composable, scientific computing

LunCo: virtual universe to design real space missions 🌎🚀🌚

A python tool to create simulation models for different domains based on BIM IFC models.

Free library for interfacing hardware drivers to Modelica models. There is support for joysticks, keyboards, UDP, TCP/IP, LCM, MQTT, shared memory, AD/DA converters, serial port and other devices.

Energym is an open source building simulation library designed to test climate control and energy management strategies on buildings in a systematic and reproducible way.

Modelica models integration with Open AI Gym

📄 Modelica library for data I/O of CSV, INI, JSON, MATLAB MAT, SSV, TIR, Excel XLS/XLSX and XML files

Free (standard conform) library that is intended to model electrical power systems at different levels of detail both in transient and steady-state mode.

Modelica BuildingSystems library

Free library for modelling and simulation of waste water treatment plants.

The ExternalMedia library provides a framework for interfacing external codes computing fluid properties to Modelica.Media-compatible component models.

DroneLibrary: Multi-Domain Drone Modeling in Modelica with 3D visualization and FMU export configuration

The OpenModelica Compiler is the core of the OpenModelica project, which is an open-source Modelica-based modeling and simulation environment intended for industrial and academic usage.