If you wish to sell digital goods over the internet such as ebooks, software, graphics, music or anything else which can be sent as an attachment to an email, then this ASP.Net application provides a complete interface to the PayPal IPN (Instant Payment Notification)
Developer: webconcerns.co.uk Platform: windows Date upd:2006-08-14 Hits4576 [Visit]

Sample code to access FraudLabs Credit Card Fraud Detection Web Service using SOAP method. FraudLabs is a hosted XML Web Service that allows instant detection of fraudulent online credit card orders by using several non-intrusive parameters such as IP address, email address domain name,
Developer: Fraudlabs Platform: linux, windows, freebsd, osx, sun Date upd:2005-08-22 Hits1145 [Download] [Visit]

Download sourcecode for this easy to customize, yet flexible shopping cart solution. Supports Paypal and works in medioum trust - IDN is not used but shows a technique to redirect and carry all shopping cart items over to paypal.
Developer: Systementor AB Platform: windows Date upd:2007-06-08 Hits11 [Visit]

Credit Card Validator .NET Component allows .NET programmers validate any Credit Card number without contacting a payment service provider. The non-visual component can be used either in .NET windows-based or ASP.NET application. The validation mechanism is based on the luhn10 (mod10) credit card algorithm,
Developer: Components4U Platform: windows Date upd:2006-12-17 Hits960 [Download] [Visit]

XSE.NET is an electronic commerce software built upon the Microsoft .Net framework providing a complete shopping cart system. The application includes dynamically driven menus, optimized search function, Web Based Administration Control Center and search engine optimization. Customizable templates provide extensive flexibility in site design.
Developer: IQservices.com Platform: windows Date upd:2005-01-22 Hits5027 [Download] [Visit]