- ITI GmbH, Germany
- CENIT AG, Germany
- TLK-Thermo GmbH, Germany
- BAUSCH-GALL GmbH, Germany
- LMS IMAGINE, Germany
- Schlegel Simulation GmbH, Germany
- Motus srl, Italy
- Dassault Systèmes, France
- Open Source Modelica Consortium
- XRG Simulation GmbH, Germany
- QTronic GmbH, Germany
- MapleSoft, Canada
- MathCore Engineering AB, Sweden
- Modelon AB, Sweden
- CLAYTEX, UK