QuickBooks tool hub is a free program that provides a central location for accessing various QuickBooks tools and utilities. It is designed to help users troubleshoot common issues and errors in QuickBooks. The Tool Hub includes a variety of tools such as the Quick Fix My Program, Install Diagnostic Tool, File Doctor, and more. It can help resolve issues with installation, company file errors, network issues, and other QuickBooks-related problems. The Tool Hub is a handy utility that can save time and simplify the troubleshooting process.