Sage CRM Builder is a new product that allows users to customize their Sage CRM experience. It provides tools to define custom modules, relate modules to each other, select module features, and build summary screens. This helps users centralize and manage business information like training courses, attendees, suppliers, and more. Sage CRM Builder offers flexibility to manage various business tasks and scales with the user's business needs. It's included with Sage CRM Professional Edition at no extra cost.