QuickBooks Tool Hub is a software application developed by Intuit, the makers of QuickBooks accounting software. It is a collection of tools and utilities that can help diagnose and fix common issues with QuickBooks Desktop software. The Tool Hub includes various tools such as the Quick Fix my Program, QuickBooks File Doctor, and the Program Diagnostic Tool, among others. It is designed to make it easier for users to troubleshoot and resolve technical issues with their QuickBooks software. The QuickBooks Tool Hub is available as a free download from the Intuit website and is compatible with most versions of QuickBooks Desktop.