Sigma is a construction estimating software for commercial and residential contractors. Whether you are a small subcontractor, general contractor or large engineering firm, this estimating solution will work for you. It provides methods for estimating Material, Labor and Equipment with flexibility and automation in markups and pricing. Some of the key features included are use of historical data, built-in validation and analysis, custom templates and libraries, and full integrations to solutions like PlanSwift Takeoff, Revit or Autodesk 3D BIM. The interface is intuitive and user friendly with drag and drop functionality and has complete pricing databases available from RS Means and BNi. Sigma comes with free upgrades, maintenance and support.