OpenConstructionERP

OpenConstructionERP is an open-source construction ERP that combines estimates, schedules, tenders, contracts, site tasks, and reports in one platform. It brings bill of quantities (BOQ) work, 4D scheduling, and 5D cost control together for construction project management.

It supports PDF takeoff, CAD and BIM import from DWG, RVT, and IFC files, and AI cost matching against a catalog of 55,000+ priced cost items. It also covers tendering, validation, risk, and reporting, and ships with multiple language bundles and regional cost catalogues.

OpenConstructionERP is self-hosted under AGPL-3.0. The backend is Python and FastAPI with a React frontend, and it runs as a native desktop app on Windows, macOS, and Linux or via pip install, with Docker as an option. It uses an embedded PostgreSQL 16 database by default, or SQLite, and runs fully offline on your own machine.