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 | Collins Aerospace | Continental Automotive |
| DaeSung Electric | Daihatsu Motor | Daimler |
| DIAS Automotive Electronic Systems China | Delphi Corporation | Delphi Diesel Systems |
| Delphi Propulsion Systems | Delphi Technical Center India | Delta Taiwan |
| Denso | DENSO TECHNO Co.,Ltd | DongFeng Commercial Vehicle China |
| DongFeng Nissan Passenger Vehicle | 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 | Gwangju Institute of Green-car Advancement |
| 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 | Nabtesco |
| Navistar | NASA Ames Research Center | Nexteer |
| Nissan | Nissan Techno Vietnam | Opel Automobile GmbH |
| Panasonic Advanced Technology Development | 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 | |
