QuickBooks Import Interchange Format

computing: software: data formats: QuickBooks Import Interchange Format

Overview
QuickBooks Import Interchange Format (.iif) is a proprietary format used by the QuickBooks accounting software.

Reference

 * Sample IIF Files at quickbooks.com
 * filext.com

Tools

 * Quickbooks IIF Creation: "This script will, when an order is placed, create 2 IIF files, customer and sales, thus allowing you to import the client info and order details..."