By customer
- Caceis Investor Services
- Caixa Economica Federal
- Canadian Clothing Chain
- Cars.com
- Case Western Reserve University, Case School of Engineering
- Castilla y León
- CBP
- Centre for Railway Information Systems
- Centre Hospitalier de la Polynésie Française
- Cheshire County Council
- China New Media Development Zone
- Chinese Insurance Company (CIC)
- Chinese municipal government
- Cincom Systems Inc.
- Cincom Systems
- City of Bolzano
- City of Dubuque, Iowa
- City of Helsinki
- City of Madrid
- City of Nettuno
- City Region of Eindhoven
- City University London
- Clinical and Management Solutions
- Cognizant
- Communications provider
- CompWest Insurance Company
- Conad del Tirreno
- ConAgra Mills
- Consorzio Parmigiano-Reggiano
- Container Centralen
- Crowley Maritime Corporation