Built with the .NET framework, CIM Library provides a programmatic interface to Authorize.Net’s CIM web service. CIM helps eCommerce companies become PCI-DSS compliant, by letting them store sensitive customer credit card and bank information on Authorize.Net’s servers. Free Trial Version available. IT DevWorks is an Authorize.Net Certified Developer, and was one of the earliest companies to implement CIM solutions, and the first to gain certification from Authorize.Net in their CIM service. CIM Library includes a full Getting Started document and online reference documentation. CIM Library uses an object model that developers will be familiar and comfortable with. In addition, it provides events and multi-threading options, allowing you to present progress dialogs for long operations. It is managed code through-and-through, so you don't have to worry about any interop calls causing performance problems.