Open AEC Foundation - Open source for an open construction & infrastructure industry

Draw in 2D and 3D with open source CAD

Open CAD Studio is a full-featured 2D + 3D CAD application, built in Rust with GPU-accelerated rendering. Native DWG & DXF read and write (R13–R2018) — your existing drawings work right away. A community project by Hakan Seven, aligned with the OpenAEC ecosystem.

✓ 2D + 3D CAD — GPU-accelerated rendering (wgpu/iced)

✓ Native DWG & DXF — read and write, R13–R2018

✓ Paper space & ACIS solids — dimensions and layouts

✓ Rust speed — smooth even with large drawings

✓ Fully open source — community-driven, no licence fees

✓ Windows, macOS & Linux — native desktop application

Estimate and budget with open source & AI

Open Calc Studio is a full-featured cost-estimation and budgeting tool for construction — estimates, budgets and tenders. Fully open source, local and subscription-free. And thanks to the AI integration you simply talk to your estimate: ask about line items, adjust quantities and search projects from the past.

✓ Full cost estimation — line items, quantities, unit prices and overheads

✓ Voice-driven with AI — talk to your estimate via Claude & MCP

✓ Building, civil & infra — flexible budget structure per project

✓ Import & export — work with your existing data and formats

✓ Fully open source — no subscription, 100%-local, you own your data

✓ Right in the browser — live demo, no installation

AECI

IFCX

The universal data format of the OpenAEC ecosystem. All tools communicate in IFCX with custom namespaces for the complete building model.

AECI

Open PDF Studio

Available

Open tooling around PDF-based document flows and technical publishing.

809 commits untagged-b2f7f7ff80d18e2a230f 699 24 aug 202624 Aug 2026

Product page Live demo →

AEC

Open CAD Studio

CommunityBeta

Full-featured 2D + 3D CAD application built in Rust with GPU-accelerated rendering (wgpu/iced). Native DWG & DXF read and write (R13–R2018), paper space, ACIS solids, dimensions, layouts. Community project by Hakan Seven, aligned with the OpenAEC ecosystem.

1322 commits v0.8.1 161 223 opgelost 13 jul 202613 Jul 2026

Product page Live demo → GitHub →

AECI

OpenAEC Installer

AvailableBeta

Central hub to install, update and launch every OpenAEC tool — one place for the whole ecosystem. For Windows, macOS and Linux.

29 commits v0.1 24 aug 202624 Aug 2026

Download → GitHub →

Open Calc Studio

Available

Open source cost estimation and budgeting tool for buildings, infrastructure and civil works.

73 commits v0.9 8 17 aug 202617 Aug 2026

Product page Live demo →

Open Heatloss Studio

AvailableBeta

Open source heat loss calculation for buildings. Calculates transmission and ventilation losses per room according to NEN 12831.

692 commits v0.1 2 21 jul 202621 Jul 2026

Product page Live demo →

Open Geotechniek Studio

AvailableBetaCivil / Geotechnical

Civil engineering tool: viewer for cone penetration tests (CPT, GEF / BRO-xml). Analyze geotechnical soil data for foundations and earthworks.

205 commits v0.4 6 14 aug 202614 Aug 2026

Product page Live demo →

Pile Plan Studio

AvailableBetaCivil / Geotechnical

Create and manage pile plans with positioning, numbering, dimensions and technical output for foundation projects.

218 commits v0.2 3 22 aug 202622 Aug 2026

Product page Live demo →

Open Planner Studio

Beta

Open planning and project coordination tool for buildings, infrastructure and civil works.

1399 commits v2026.8 11 22 aug 202622 Aug 2026

Product page Live demo →

AECI

Open Speech Studio

AvailableBeta

Open source speech-to-text and meeting notes tool for construction meetings and project consultations.

88 commits v0.10 3 13 aug 202613 Aug 2026

Product page →

Open Books Studio

AvailableIn development

Open project for scanning and digitising old architectural books. Makes historic architectural heritage accessible for research, restoration and the OpenAEC ecosystem.

112 commits 7 20 mei 202620 May 2026

GitHub Live demo →

AECI

Y-app

AvailableBetaEverything-app

Open source communication and collaboration platform for construction projects.

439 commits v0.15 2 18 mei 2026

Product page →

Monty IFC Viewer

AvailableBeta

IFC viewer designed for on-site assembly. Quick inspection of open BIM models on tablet and mobile.

45 commits v1.0 1 6 jul 20266 Jul 2026

Product page Live demo →

Open Calculations Studio

In developmentBuildings + Civil

Open source tool for structural hand calculations — inspired by CalcPAD. With units, KaTeX formulas, SVG drawings and live IFCX + IFC4x3 STEP export. Existing .cpd files work without migration.

68 commits v0.1 15 22 aug 202622 Aug 2026

Product page Live demo →

Open Field Studio

AvailableBeta

Open source fieldwork and inspection page for construction site registration and quality control.

31 commits v0.3 24 aug 202624 Aug 2026

Product page Live demo →

ECI

Open Pointcloud Studio

Alpha

Viewer and workflow page for point cloud data in renovation and analysis projects.

15 commits v0.3 3 18 aug 202618 Aug 2026

Product page Live demo →

Open BIM Validator Studio

Open source tool for validating IFC models against standards and project requirements (IDS, NL-BIM Basis ILS, RVB BIM Norm).

74 commits 2 12 aug 202612 Aug 2026

Product page →

AECI

OpenAEC SuperCloud

In development

OpenAEC's sovereign all-in-one cloud, account and SSO platform. One identity and login for the entire ecosystem — storage, collaboration and synchronisation, fully self-hosted and open.

BCF Manager Studio

In development

Open-source BCF 2.1 issue management platform for BIM projects. Manage issues, communicate with teams and link to IFC models.

40 commits 21 apr 202621 Apr 2026

Product page →

Open Frame Studio

AlphaBuildings + Civil

Open source structural analysis tool. 2D frame calculations for beams, columns, portal structures and civil load-bearing systems.

121 commits v0.1 5 17 aug 202617 Aug 2026

GitHub →

Buildings, infrastructure & civil engineering

OpenAEC covers the full Architecture, Engineering & Construction chain: from residential and commercial buildings to roads, bridges, tunnels, railways, water infrastructure and civil works. Our tools and the IFCX ecosystem support IfcBuilding, IfcRoad, IfcRail, IfcBridge, IfcTunnel and IfcMarineFacility — conforming to IFC 4.3.

Buildings & utilities

Homes, offices, schools, hospitals — from design to delivery and management.

Civil infrastructure

Roads, dikes, water barriers, sewerage, earthworks.

Civil engineering

Bridges, tunnels, viaducts, locks, harbours, railways, geotechnics.

Infrastructure

Energy and utility networks, telecom, transport, public space, monuments.

"Developing, supporting and promoting open source software for the entire AEC chain (buildings, infrastructure, civil engineering)."

Development

Coordinating and funding open source software development

Support

Managing licenses, API connections and integrations

Education

Internship and training opportunities for students

Advocacy

Promoting open source and open standards

We are in the development phase

Are you an early adopter who wants to be at the foundation of the future of IT in the Dutch construction industry? Join as a volunteer. Test the tools and provide us with feedback, GitHub Issues and lots of ideas! In the age of AI, ideas are worth gold. Join the discussion on GitHub about ideas and issues.

⭐ 1787 GitHub stars across 69 public repositories

Open source for an open construction & infrastructure industry

Draw in 2D and 3D with open source CAD

Estimate and budget with open source & AI

The OpenAEC ecosystem

IFCX

Open PDF Studio

Open CAD Studio

OpenAEC Installer

Open Calc Studio

Open Heatloss Studio

Open Geotechniek Studio

Pile Plan Studio

Open Planner Studio

Open Speech Studio

Open Books Studio

Y-app

Monty IFC Viewer

Open Calculations Studio

Open Field Studio

Open Pointcloud Studio

Open BIM Validator Studio

OpenAEC SuperCloud

BCF Manager Studio

Open Frame Studio

Buildings, infrastructure & civil engineering

Why OpenAEC Foundation?

Cost reduction

AI-ready

Future-proof

Education

Open formats

User-friendly

"Developing, supporting and promoting open source software for the entire AEC chain (buildings, infrastructure, civil engineering)."

Development

Support

Education

Advocacy

The board

Stay updated

We are in the development phase

Get in touch

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