- 3Com
- Access Data
- Acme Packet
- Adobe System Inc.
- Alcatel-Lucent
- APC
- Apple
- Bea
- Canon
- Citrix Systems, Inc.
- CIW Internet Certifications
- Cognos
- CompTIA
- Computer Associates
- Convergence Technologies Professional (CTP)
- Curam Software
- CWNP
- D-Link
- Data Center University by APC Certifications
- Dell Computer
- dotMobi
- EC-Council
- EMC
- Enterasys Networks
- Exam Express
- Exin
- F5
- FileMaker
- Foundry Networks
- Fujitsu
- Genesys
- Guidance Software
- H3C
- Help Desk Institute
- Hewlett Packard
- HIPAA Academy
- Hitachi Data Systems
- Huawei
- IBM
- Information System Examination Board
- Intel
- International Consortium of Certified Knowledge Experts
- Juniper Networks
- Linux Professional Institute
- Lotus
- MECP
- Microsoft
- Mile2: Asia Pacific
- Mile2: Europe and the Middle East
- Mincom
- NACSE
- NCR ATM
- NEC
- Network Appliance
- Network General
- Nokia
- Nortel
- Novell
- OMG
- Open Group
- Oracle
- Polycom
- RES Software
- Riverstone Networks
- SAIR Linux and GNU
- SAS Institute
- Security Certified Program
- SeeBeyond
- SNIA
- Software Certifications, a division of the Quality Assurance Intitute (QAI)
- Software Testing Support
- Sun Microsystems
- Sybase
- Symantec
- Teradata
- The SCO Group, Inc.
- TIBCO
- TruSecure
- Ubuntu
- Universitas 21 Global
- XML Master Certification



