- CAS Software [Karlsruhe]
- CASE - Center for Applied Software Engineering
- Caixa Mágica Software
- Canter of China Study
- Canterbury Christ Church University
- Cape Peninsula University of Technology
- Carnegie Mellon University [Pittsburgh]
- Carnegie Mellon University [Silicon Valley]
- Center for Research on Information, Customer and Innovation Management
- CentraleSupélec
- Centre National de la Recherche Scientifique
- Centre de recherche en gestion
- Centre d’Excellence en Technologies de l’Information et de la Communication
- Centre for Organisational Research
- Centre of Research on Open Source Software (CROSS)
- Centre of Research on Open Source Software - CROSS
- Centro de Competência em Software Livre Qualipso at University of São Paulo
- Chalmers University of Technology [Göteborg]
- Clemson University
- Codethink Ltd.
- Combitech AB
- Copenhagen Business School [Copenhagen]
- Costa Rica Institute of Technology [Cartago]