Dynamo

It is a graphical programming interface that provides designers access to parametric modeling and data-driven customized workflows for building information modeling (BIM). It can run as an addin for Autodesk Revit and Autodesk Vasari, with the ability to manage Revit project files and family definitions, or it can run as a standalone program. It allows users to control complex geometry, construct parametric relationships, manage data, and automate tasks.