Reactis is used by companies around the world in the automotive,
aerospace/defense, heavy equipment, medical, and energy industries as well
as in academia.
| Advics | Airbus | Aisin |
| Aptiv Components India Pvt. Ltd. | AVL | Azapa |
| Autoliv | BAE Systems | Bosch |
| Calsonic Kansei | Carmeq | Chimei Motor |
| China Motor TW | Chrysler | Chung Shan Institute of Science and Technology |
| CK Electric Machinery Development | Continental Automotive | DaeSung Electric |
| Daihatsu Motor | Daimler | DIAS Automotive Electronic Systems China |
| Delphi Corporation | Delphi Diesel Systems | Delphi Technical Center India |
| Delta Taiwan | Denso | DENSO TECHNO Co.,Ltd |
| DongFeng Commercial Vehicle China | Eaton | Fiat Chrysler Automobiles |
| Ford | Fraunhofer Center for Experimental Software Engineering | Fuji Heavy Industries |
| Fujitsu BSC Japan | Fujitsu Computer Technologies | GE Global Research |
| GE Transportation | General Motors | Hanhwa |
| Hitachi | Hitachi ULSI Systems Japan | Honda |
| Honda Elesys | Honeywell | Hyundai Autron |
| Hyundai Wia Korea | Imasen Electric Industrial | Isuzu |
| Jatco | John Deere | Karma |
| Keihin Corporation | Keihin Electronics Technology | Keihin R&D China |
| KPIT | Mando | Magneti Marelli India Pvt. Ltd. |
| Mazda | McMaster University | Mercedes-Benz Research and Development |
| Mitsubishi | Mitsubishi Electric Control Software | Mitsubishi Electric Micro-Computer Application Software |
| Mitsubishi Motors | Navistar | NASA Ames Research Center |
| Nexteer | Nissan | Nissan Techno Vietnam |
| Opel Automobile GmbH | Panasonic Japan | Pi Innovo |
| Renault | Renault Nissan India | Rockwell Collins |
| SAIC Motor Corporation | SGS Taiwan | SKY Japan |
| Smiths Medical | SRM Technologies | Strattec |
| Suzuki Motor Corporation | Taiwan Institute of Nuclear Energy Research | Tata Consultancy Services |
| Tata Elxsi | Tata Motors | The Software Beret |
| Toyota Motor Corporation | Toyota Technical Development Corp | Transtron |
| TRW | University of Minnesota | Veoneer |
| Witte Automotive France | ZF | |
