- Cray XK6
- Cray XMS
- Cray XMT
- Cray XT3
- Cray XT4
- Cray XT5 (Jaguar)
- Cray XT6
- Cray Y-MP
- Cray-1
- Cray-2
- Cray-3
- Cray-History.net
- Creaform (3D)
- Creative Breakthroughs, Inc.
- Creative Consultants Group
- Creative Micro Designs
- Creative Science Systems
- Creative Technology
- Creative Technology CUBIC 99
- Creatronic
- Creatronic Bi Bip 4
- Creatronic Bi.Bip 100
- Creatronic Bi.Bip 6
- Creatronic Bi.Bip 8
- Creatronic Program 2000
- Creature House
- Credant Technologies
- Credence Analytics
- Credera
- Credit Dispute Pros
- Creo Co Ltd
- Creo Elements/Pro
- Creo Elements/View
- Crescrance
- Cressanda Solutions Ltd
- Cresset Biomolecular Discovery
- Crestron Electronics Inc.
- Crestron Electronics, Inc.
- CRF01F (19 in 1)
- Crintsoft
- Cristina Videira Lopes
- Critical Manufacturing
- Critical Watch
- Critigen LLC
- CRM Manager
- Croix Connect, Inc.
- Cromemco
- Cromemco C-10
- Cromemco SCC
- Cromemco System CS100
- Cromemco System CS300
- Cromemco System CS400
- Cromemco System One
- Cromemco System Three
- Cromemco System Zero
- Cromemco Z-1
- Cromemco Z-2
- CronLab Ltd.
- CronSights
- CROSCON
- Cross Fire
- Crossbeam Systems
- Crossgain Corporation
- Crosslight Software
- Crossroads Systems, Inc.
- CrowdCurity
- CrowdNoize, LLC.
- Crowdspring
- Crowdtilt, Inc.
- CrucialTec Co Ltd
- Crunchy Logistics
- Crusher
- Cruz PS47
- Cruz R100
- Cruz t103
- Cruz t301
- Cruz t408
- Cruz t410
- Cruz t501
- Cruz t507
- Cruz t508
- Cruz t510
- Cruzio
- Crystal Point
- Crystal River Engineering
- CS Technology, Inc.
- CSA
- CSCM IT Solutions
- CSE-RACK14U
- CSG International
- CSG Ltd
- CSharpBuilder
- CSIRAC
- CSP Inc
- CT Networks
- CT7716
- CT7740
- Ctac NV
- CTERA Networks Ltd.