3Delta Systems
Absa Bank
Abu Dhabi Com'l Bank
Accenture Financial Services
Acculynk
ACH Direct
Ahli United Bank
Airdrie Savings Bank
Al Rajhi Bank
Alaska Option
Alpha Card Services
American Express
Arab Bank
Arab National Bank
Banco del Bajio
Banco Popular
Bank Alfalah
Bank Audi
Bank Hapoalim
Bank Leumi
Banque Centrale Populaire
Barclaycard US
BillFloat
CCG Catalyst
CCV
ChargeAnywhere
CheckCard Group
Com'l Bank of Kuwait
CrossCheck
CU-24
Datacap Systems
Diners Club
Discover Card
Doha Bank
Dubai Islamic Bank
Dynamic Card Solutions
Elavon
Emirates NBD
EnCircle Payment Solutions
European Payments Council
ExaDigm
Experian Business Info. Serv.
EZCheck
Fastcheck Network
FICO
First American Payment Sys.
First Data
First National Bank
First Nat'l Bank of Omaha
First Round Capital
FIS Global
Freelinc
GE Money
Gemalto
Global Cash Card
Global eTelecom
Global Payments
Green Dot Corp.
GRP Partners
Gulf Bank

Home Trust of Canada
HSBC
Ikano Bank
Iliad Solutions
InterPro Technology
Intuit Payment Solutions
Israel Discount
JCB International
Kuwait Finance House
Maduro & Curiel's Bank
Mashreq Bank
MasterCard
Mauritius Commercial Bank
Merchant eSolutions
Mobile Payment China
MShift
NAFCU Services Corp.
National Bank of Kuwait
Nedbank Group
NetSpend
NPC
NYCE
Oak Investment Partners
PagoVision
Paragon Application Systems
Paymentech
PayPal
PBS
Postbank
Privier
Pulse Networks
Qatar National Bank
Riyad Bank
SABB
Sage Payments Solutions
Sam's Club
Samba Financial
Secure Payment Systems
Shazam
Standard Bank
Standard Chartered
Strategic Solutions Group
TD Retail Card Services
TeleCheck
Tempo Payments
The Members Group (TMG)
Total Card
Transaction Network Services
Trüb
TSYS Acquiring
U.S. Bank
United Tranz Actions
Venrock
VeriFone
Visa
Wal-Mart
Wave Crest Holdings
Welcome Real-time
Wyndham Hotels
Xtrategies