The top construction estimating software today includes STACK, PlanSwift, ProEst, Autodesk Takeoff, Bluebeam Revu, Sage Estimating, Clear Estimates, Buildxact, On-Screen Takeoff (ConstructConnect), and WinEst, and they mainly differ in digital takeoff, cost databases, bid management, and integration with accounting/project tools. STACK, Autodesk Takeoff, and Buildxact are strong cloud-based options with real-time collaboration and easy workflows, while PlanSwift and Bluebeam are popular for fast PDF-based takeoff, and Sage, WinEst, and ProEst are more enterprise-focused with advanced cost control and ERP integration. Overall, cloud tools are easier and scalable for small to mid projects, while enterprise systems offer higher accuracy, deeper integration, and better suitability for large commercial and infrastructure construction.