Credit Card Number Module contains routines for dealing with credit card numbers.

Credit Card Verifier can be used to verify the syntax of most credit cards.

to and Credit Card Orderform - Combination Mail-to and Credit Card Orderform can be used for both a mail-to form and for taking credit card orders on-line.

ECHOpayform is a one-page payment processing form that takes credit card and check transactions in real time.

Commerce.CGI is an e-commerce shopping cart program.

TCLink Script allows you to run credit card transactions directly over the Internet.

Credit Card Validation Solution is an open source script that ensures the credit card information is keyed in correctly.

IBiz S3 Integrator - Do your applications need secure, always-on storage accessible from anywhere in the world?

DynuCreditCard ASP Component - Using this component you can perform credit card checksum, type and expiration date validation all from within your ASP pages.

pbAuthorizeNet directly interacts with the Authorize.Net credit card gateway.

Web UI Credit Card Validator validates the major types of credit cards without connecting to payment processor.

inProcess - Credit Card Processing Module for Existing Solutions

OpenECHO.com provides free, open source, software modules that can be easily integrated into your applications and website to accept credit card and electronic check payments.

ECHOpayform - Accept credit cards and checks

IBiz Vital/TSYS Integrator includes Components for direct credit card authorization and transaction processing through Vital/TSYS