Custom Tabs (Iframes) in Rackbeat allow you to create custom tabs that embed external web content directly into your dashboard navigation. These powerful customization tools, also called "tabs", enable you to integrate third-party applications, custom dashboards, or external services seamlessly into your Rackbeat workflow. Each iframe can be configured with a custom name, secure HTTPS URL, optional icon from a predefined set, and can be made available to all users or restricted to specific team members. When active, these custom tabs appear in both the main navigation header and sidebar, providing quick access to external tools while maintaining your workflow within the Rackbeat interface.