OpenBuildings Designer (formerly AECOsim Building Designer), Bentley’s multi-discipline building data modeling (BIM). Discover, design, and deliver innovative buildings quicker. You can design, analyze, document, visualize, and visualize buildings of any form or complexity. Communicate design intent effectively and bridge the gap between different disciplines and geographically dispersed teams. OpenBuildings Designer (formerly AECOsim Building Designer), provides advanced building information modeling (BIM). This allows you to deliver buildings faster and more confidently. You can have confidence in your design, workflow capabilities, deliverables, and design. With a shared set and workflows, you can increase collaboration between architects, structural, mechanical, and electrical engineers. You can easily integrate information from multiple formats and work on projects of any size. You can communicate clearly your design intent using reliable deliverables you can easily customize.