By partner
- DASC
- Datacentrix
- Data Clarity
- Data Systems International (DSI)
- DecisionEd Group
- Decision Focus
- Decision Resources
- Deister S.A.
- Deltares
- DemandTec Inc
- Descom Oy
- Descom
- Diademys
- Distributed Systems Services, Inc.
- Dittrich and Partner Consulting GmbH
- DSS Consulting
- DSS (Direct Systems Support, Inc.)
- Dutch Cloud BV
- Dynamix Group Inc.
- Dynamix Group
