A building project usually scatters across a dozen disconnected tools, and Massing pulls the whole lifecycle into one browser workspace organized as seven rooms: Deal, Design, Planning, Schedule, Cost, Work, and Operate. Generate massing options from a zoning envelope, author the model, and produce permit-ready drawing sets with plans, sections, elevations, and schedules exported as SVG, PDF, or DXF on ARCH-D sheets, plus a MasterFormat specification manual. An IBC code pre-check flags problems before submission. The general contractor portal spans 139 modules for RFIs, submittals, change orders, G702 and G703 pay applications, a critical path schedule, safety tracking with TRIR, and COBie closeout. A development proforma handles sources and uses, XIRR, NPV, and joint venture waterfalls. A vitals strip keeps float, health, and cost per square foot in view, and a next best action banner points to the most urgent item for whichever role you pick, for example general contractor. A CAD command line speeds drafting, and an AI command bar and an MCP server connect assistants to the project. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.