AEC Open Source Directory

A curated list of open source projects for the Architecture, Engineering, and Construction (AEC) industry. A live frontend demo can be found HERE

How to Add a Project

Submit your project using our simple GitHub issue form: See submit a project

License

This directory is licensed under the MIT License - see the LICENSE file for details.

This project is inspired by the extra-awesome-dotnet project.

Projects

Project	Description	Language	Stars	Last Updated	License
OCCT	Open CASCADE Technology (OCCT) is an open-source software development platform for 3D CAD, CAM, CAE.	C++	2097	Jan 14, 2026	LGPL-2.1
compas	Main library of the COMPAS framework and CAD integrations for Rhino/GH and Blender.	Python	349	Dec 14, 2025	MIT
three.js	JavaScript 3D Library.	JavaScript	110298	Jan 14, 2026	MIT
voxelization_toolkit	Voxelization Toolkit for (IFC) Building Models	C++	86	Jan 12, 2026	MIT
BIMserver	The open source BIMserver platform	Java	1675	Jan 9, 2026	AGPL-3.0
ladybug	🐞 Core ladybug library for weather data analysis and visualization	Python	220	Jan 13, 2026	AGPL-3.0
QGIS	QGIS is a free, open source, cross platform (lin/win/mac) geographical information system (GIS)	C++	13139	Jan 13, 2026	GPL-2.0
rhino3dm	Libraries based on OpenNURBS with a RhinoCommon style	C#	701	Jan 13, 2026	MIT
lcax	LCAx is a open, verifiable, machine and human-readable LCA exchange format	Rust	72	Jan 13, 2026	Apache-2.0
calc	Calc helps architects quickly estimate the environmental impact of their early design.	C#	18	Nov 26, 2025	MIT
IfcOpenShell	Open source IFC library and geometry engine	C++	2334	Jan 13, 2026	LGPL-3.0
xeokit-sdk	3D BIM IFC Viewer SDK for AEC engineering applications. Open Source JavaScript Toolkit based on pure WebGL for top performance, real-world coordinates and full double precision	HTML	862	Jan 13, 2026	AGPL-3.0
compas_wood	Project for Timber Joint Generation. Documentation:	Python	46	Jan 7, 2026	MIT
honeybee-energy	🐝 🔥 Honeybee extension for energy simulation	Python	33	Jan 6, 2026	AGPL-3.0
dragonfly-core	🐉 dragonfly core library	Python	18	Jan 6, 2026	AGPL-3.0
honeybee-radiance	🐝 ⚡️ Radiance extension for Honeybee	Python	17	Jan 13, 2026	AGPL-3.0
geospiza	Geospiza is a project focusing on evolutionary design in grasshopper	C#	6	Sep 30, 2025	MIT
BetterCorrectFast	Simplified BIM Collaboration Format (BCF) generation for project leaders and managers	Python	12	Feb 13, 2025	MIT
sPrint	A Chrome extension that allows batch-print PDFs from BIM360 and ACC platforms.	TypeScript	32	Dec 12, 2025	MIT
IfcLCA	Open Source Life Cycle Assessment for Built Environment with Industry Foundation Classes	TypeScript	34	Jan 12, 2026	AGPL-3.0
ifc-flow	A visual node-based tool for working with Industry Foundation Classes (IFC) files	TypeScript	65	Dec 15, 2025	AGPL-3.0
ifc-classifier	Web-based tool to add IFC classification references (Uniclass, eBKP-H etc.) with 3D visualization using Three.js, web-ifc, and IfcOpenShell.	TypeScript	22	Jan 8, 2026	AGPL-3.0
D2P-Components	D2P Components streamline parametric modeling in Grasshopper, helping you manage complex data trees, reduce recomputations, and maintain a structured, scalable workflow from concept to fabrication.	C#	19	Oct 11, 2025	MIT
ara3d-sdk	📚 Various C# libraries for efficient data driven applications	C#	20	Jan 12, 2026	MIT
ara3d-webgl	A Three.JS based WebGL viewer for AEC data.	TypeScript	35	Jan 3, 2026	MIT
gladis	A web app and search engine for Environmental Product Declarations (EPDs).	N/A	0	Jan 14, 2026	Unknown
honey-ifc	Stylish desktop app for exploring and exporting IFC data — fast, fun, and frustration-free.	Python	6	Dec 4, 2025	GPL-3.0
bowerbird	Scripted C# Plug-in Framework for Revit	C#	57	Sep 28, 2025	MIT
EngineeringPaper.xyz	EngineeringPaper.xyz is a web app that makes it easy to create, save, and share engineering calculations.	TypeScript	201	Jan 11, 2026	MIT
bim-open-schema	Representing BIM Data as Parquet	JavaScript	34	Jan 6, 2026	MIT
awatif	The First Web-based Parametric Structural Engineering Platform	TypeScript	120	Jan 13, 2026	MIT
Taxonomy	A set of interfaces describing a taxonomy for structural engineering objects	C#	4	Jan 12, 2026	MIT
engine_components	No description provided	TypeScript	580	Jan 12, 2026	MIT
SOM-Toolkit	⚠️ ARCHIVED — This repository is no longer actively developed. Only critical bug fixes will be applied. ➡️ Successor: https://github.com/c-mellueh/bSDD-Toolkit	Python	8	Jan 5, 2026	MIT
IfcBorehole	CLI and GUI for creating IfcBoreholes from Excel or GIS files or a pandas dataframe	Python	1	Oct 2, 2025	MIT
RevitAddInManager	Revit AddinManager update .NET assemblies without restart Revit for developer.	C#	413	Jan 9, 2026	MIT
Hywe	Space layout planning in a browser	F#	7	Jan 2, 2026	MIT
AppBuilderSdk	Single page application which serves as the frontend of ShapeDiver App Builder	TypeScript	9	Jan 12, 2026	MIT
ifc-ids-mcp	An MCP to create IDS files deterministically using IfcOpenShell's IfcTester	Python	19	Dec 3, 2025	MIT
p5.js	p5.js is a client-side JS platform that empowers artists, designers, students, and anyone to learn to code and express themselves creatively on the web. It is based on the core principles of Processing. Looking for p5.js 2.0? http://beta.p5js.org	JavaScript	23338	Jan 13, 2026	LGPL-2.1
enji-react-svg-drawings	This repository demonstrates how React can be used to create SVG-based drawings for construction and manufacturing applications.	TypeScript	13	Dec 17, 2025	Unknown
Speckle2Graph	No description provided	Python	0	Dec 15, 2025	Apache-2.0
Calcpad	Free and open source software for mathematical and engineering calculations.	HTML	619	Jan 7, 2026	MIT