AuthorizeNet AuthorizeNet by: AuthorizeNet .NET Framework This package is compatible with all versions of .NET Framework. 30,615 total downloads last updated 12/19/2014 Latest version: 1.8.3 Payments API Authorize.Net Use this SDK to integrate with the Authorize.Net AIM, SIM, ARB and CIM APIs for Payment Transactions, Recurring Billing and Customer Payment Profiles.