The document promotes CostOS Estimating software, which provides powerful and accurate estimating solutions for various industries including construction, real estate, oil and gas, and infrastructure. It allows users to develop conceptual estimates, perform quantity takeoffs from BIM and 2D drawings, collaborate in real-time, and access parametric assemblies and knowledgebases to efficiently build estimates. CostOS aims to help contractors win more work, consultants provide unique services, and owners achieve maximum ROI through its integrated and customizable estimating capabilities.