Electronic Bill Presentment & Payment

ACI Worldwide
CheckFree
DST Output
Online Resources
Oracle: E-Business Suite
PayPal
Siebel (Oracle acquired)
Symantec

E-Commerce Transaction Vendors

Authorize.net
Server-based transaction-processing system that enables businesses to authorize, process, and manage credit card and electronic check transactions in a real-time, online environment.

Cardservice International
A private credit card and non-cash payments processor

CyberSource
CyberSource Electronic Check Services allow eCommerce- enabled businesses and government institutions to accept personal or business checks online, in real-time, as payment for goods and services. Once implemented, the 'payer' (customer or bill payer) simply enters his or her bank routing number (ABA number) and account number on the payment page of the site to complete the transaction. CyberSource supplies all of the back-office functionality required to facilitate the funds transfer.

Electronic Banking Systems EFT
Electronic Banking Systems EFT (EBSEFT) provides ACH processing services and electronic payment systems to businesses of all sizes.

IBM: Payment Suite
IBM payment processing products provide security-rich electronic payment processing systems. These products include features that allow for easy implementation and integration with existing payment systems. All IBM payment processing products have been awarded the SET™ Mark by SET Secure Electronic Transaction LLC (SetCo).

 iTransact.com
"With systems for managing real-time credit-card transactions (RediCharge)...and EFT payment transfers (RediEFT), iTransact offers a range of affordable services." (excerpt from Internet.com's E-Commerce Guide).

PayPal
PayPal provides an instant and secure online payment service so individuals and businesses can send and receive payments through the Internet.

VeriSign Payment Services
VeriSign provides credit card, debit card, purchase card, and electronic check processing services.

WorldPay
WorldPay is a payment service provider with over 20,000 customers trading over the internet and more than 1,200 strategic banking and e-commerce partners worldwide.

Smart Cards

California Cards and Systems
Didya.com
EuroSmart (The Voice of the Smart Card Industry)
Payment Source Technology Breaking news and in-depth analysis of ATM networks, EFT, and debit cards
Smart Card Alliance