Servers:
Dell
IBM
Compaq/HP
Sun
SGI
Apple
California Digital
Rackable

Operating Systems:
Windows Advanced Server
Windows Server
Linux
UNIX
Solaris
HP-UX
AIX
IRIX

Routers/Switches:
Cisco
Foundry
3COM
Juniper
Dell
Extreme
Nortel
Alcatal
Sycamore
Fujitsu
Lucent
Dasan
Ciena
Luxn/Sorrento
River Stone

Databases
DB2
Oracle
Microsoft SQL MySQL

Security
Cisco Intrusion Detection
Cisco Firewalls
Cisco Routers
Dedicated VPN
SOURCEfire
Certificates

Storage Solutions
SGI
EMC
Storage Tek
Hitachi

Messaging
Exchange
Sendmail
Postfix
Qmail

Other
Voice over IP
IP Services
Content Delivery
Streaming media
Wireless technology
Edge Servers
Integration Servers
Enterprise Portals
Web Services
Caching
Clustering