Bim GitHub Repositories (2026) · Open Source Tools

Open-source 3D architectural editor with a local CLI, MCP tools, and practical workflows for humans and AI agents.

Open-source construction ERP - BOQ, PDF/CAD/BIM takeoff, AI cost matching, 293 guided cases. 120,000+ priced positions, 44 languages, 190+ modules, cost data for 40+ markets. AGPL-3.0. pip install openconstructionerp

Official source code of FreeCAD, a free and opensource multiplatform 3D parametric modeler.

Monorepo for iTwin.js Library

Dynamo Libraries for Revit

The smallest useful BIM.

Official mago-3d-tiler repository, Java Version 3D Tiles Generator

Share is a browser-based BIM & CAD viewer and collaboration platform. Supports IFC, STEP, STL, OBJ, GLTF

Exact B-Rep CAD in TypeScript, with a Claude Code plugin that lets agents write parts and check them on OpenCascade.

Clean-room reader for Autodesk Revit files (.rvt/.rfa/.rte/.rft) without Revit: metadata and schema of 2016-2026 files, and typed elements with measured geometry from Revit 2023 to 2025 projects (2015 to 2022, 2026 and 2027 experimental), exported as IFC4, glTF and plan SVG. Rust, Python, WebAssembly. Apache-2.0.

Claude spun FPS Revit model viewer.