| Cisco |
| Adobe |
| Apple |
| BEA |
| Citrix |
| CIW |
| Dell |
| EC-Council |
| EMC |
| Exam Express |
| HP |
| Juniper |
| LPI |
| Lotus |
| NCR Teradata |
| Network Appliance |
| Nortel |
| Oracle |
| SAIR |
| SNIA |
| Symantec |
| Trend |
| TruSecure |
| 3COM |
| ACI |
| AccessData |
| APC |
| ARE |
| Ariba |
| Computer Associates |
| Enterasys Networks |
| Ericsson |
| EXIN,Inc |
| Extreme Networks |
| FileMaker |
| Foundny Networks |
| Fujitsu |
| Genesys |
| Guidance Software |
| HDI |
| Hitachi |
| Hyperion Solutions |
| Lucent |
| McDATA |
| Mile2 Security |
| Network General |
| Nokia |
| Novell, Inc |
| OMG |
| Patchlink |
| Polycom |
| Riverstone |
| SCO |
| SeeBeyond |
| Sybase, Inc |
| Unisys |
| Universitas 21 Global |
| XML Master Certification |
| Telecommunications Industry Association |
| Guidance Software |
| SUN |
| CompTIA |
| American College |
| Huawei |
| Tibco Software Inc |
| CWNP |
| SAS Institute |
| VERITAS |
| Check Point Software Technologies |
| Mile2 Security USA, Europe & Mid-East |
| VMware |
| Business Objects |
| MySQL |
| PostgreSQL CE |
| ICDL |
| Alcatel-Lucent |
| ISEB |
| Brocade Communications |
| SCP |
| CIPS |
| Avaya |
| Acme Packet |
| Altiris |
| The Open Group |
| Isilon |
| RSA |
| CTP |
| Cognos |