IfcOpenShell

COLLECTIVE

Open source

openbim

ifc

Fiscal Host: Open Source Collective

We build free software IfcOpenShell, Bonsai (previously known as the BlenderBIM Add-on), and more for the Architecture, Engineering, and Construction industry

This is IfcOpenShell's page IfcOpenShell

Contribute

Budget

About

Today's Balance

$21,210.55

Estimated Annual Budget

$26,319

2nd sponsored developer

$50,000

per year

Contribute

Become a financial contributor.

Financial Contributions

Recurring contribution

Just chippin' in

Has IfcOpenShell software helped you or your company? Want to help us grow but lack deep pockets? Help chip in $5 every month and together it adds up!

Starts at

$5 USD / month

Latest activity by

+ 60

Recurring contribution

Corporate Sponsor

Believe in what we do? Become an official corporate sponsor and make us grow from a spare-time gig into a sustainable foundation.

Starts at

$100 USD / month

Latest activity by

+ 6

Recurring contribution

Basic Corporate

If IfcOpenShell is a key part of your company's software library, help budget a little our way and help change the industry!

Starts at

$50 USD / month

Latest activity by

+ 6

Recurring contribution

An individual making a difference

Imagine the world without IfcOpenShell. How different would it be? Be the person to make change happen with only $10 per month.

Starts at

$10 USD / month

Latest activity by

+ 48

Custom contribution

Donation

Make a custom one-time or recurring contribution.

Latest activity by

+ 288

Projects

Support the following initiatives from IfcOpenShell.

Project

IFC5-alpha implementation in IfcOpenShell-Python

Adapt ifcopenshell.api and ifcopenshell.file for IFC5 so that Bonsai and scripts can create IFC5 ...

Latest activity by

+ 7

Top financial contributors

Organizations

Cyril Waechter BIM Insight

$10,200 USD since Nov 2022

BIMvoice

$6,710 USD since Jul 2023

PlaniBIM SA

$4,000 USD since Feb 2023

OpeningDesign

$2,754.98 USD since Apr 2023

Spectar

$950 USD since Jan 2021

Aether Engineering

$530 USD since Sep 2022

Tietoa Finland Oy

$500 USD since Feb 2022

Vyer Technologies

$450 USD since Aug 2025

AECO DEV

$360 USD since Nov 2025

Speckle

$300 USD since Nov 2025

Individuals

FOSS-is-the-future

$14,050 USD since Feb 2024

Randolph

$3,300 USD since Aug 2023

BAUPUNKTNULL AG

$3,250 USD since Dec 2022

Matthew Fuller

$2,150 USD since Apr 2021

1ncognito

$2,150 USD since Oct 2023

Gortemaker Algra Feenstra

$2,024 USD since Dec 2024

CORE Digital Engineering

$1,900 USD since Nov 2024

carlopav

$1,755 USD since Nov 2022

Dion Moult

$1,550 USD since Dec 2020

Mats Norén

$1,500 USD since Dec 2020

IfcOpenShell is all of us

Our contributors 292

Thank you for supporting IfcOpenShell.

Dion Moult

Admin

$1,550 USD

Thomas Krijnen

Admin

$150 USD

FOSS-is-the-f...

Corporate Sponsor

$14,050 USD

Cyril Waechte...

Corporate Sponsor

$10,200 USD

BIMvoice

Corporate Sponsor

$6,710 USD

(CLOSED - PAI...

$4,992 USD

PlaniBIM SA

Corporate Sponsor

$4,000 USD

Randolph

Corporate Sponsor

$3,300 USD

BAUPUNKTNULL AG

$3,250 USD

OpeningDesign

Basic Corporate

$2,755 USD

Matthew Fuller

Basic Corporate

$2,150 USD

1ncognito

Corporate Sponsor

$2,150 USD

Budget

Transparent and open finances.

Monthly financial contribution to IfcOpenShell

Credit from Marco Andrade to IfcOpenShell • May 14, 2026

+$3.00USD

Completed

Contribution #701374

Financial contribution to IfcOpenShell

Credit from pecot to IfcOpenShell • May 12, 2026

+$50.00USD

Completed

Contribution #950479

Monthly financial contribution to OpenSourceBIM (backer)

Credit from Ari Pikkarainen to IfcOpenShell • May 12, 2026

+$30.00USD

Completed

Contribution #561547

Today’s balance

$21,210.55 USD

Total raised

$89,695.77 USD

Total disbursed

$68,485.22 USD

Estimated annual budget

$26,319.38 USD

About

OpenSourceBIM helps finance the development and promotion of Open Source software for BIM. Software we are helping develop include:

IfcOpenShell, a C++ and Python IFC developer library for developing cross-platform OpenBIM apps
Bonsai (previously known as the BlenderBIM Add-on), a Blender extension to natively author IFC models
IfcConvert, a CLI utility to convert from IFC to glTF, XML, SVG, OBJ, DAE, and more.
IfcTester,a webapp, CLI utility, and library to create, edit, and validate IDS with IFC models
IfcCSV, a CLI utility and library to manage IFC data using spreadsheets
IfcDiff, a CLI utility and library to do deep semantic comparisons of IFC models
IfcClash, a CLI utility and library for IFC clash detection
BCF, a Python developer library for the BIM Collaboration Format
bSDD, a Python developer library for the buildingSMART Data Dictionary API
... and more than 10 other developer libraries and CLI apps

Our work has also contributed to a number of academic publications and research projects for OpenBIM analysis, including voxel analysis, drawing generation, and BMS data. Our software is also being taught at a number of academic institutions including the University of Applied Sciences and Arts Northwestern Switzerland, MSc-education of Architecture, Civil Engineering and Construction & Robotics tracks at RWTH Aachen University and TU Eindhoven, and the Zigurat Global Institute for Technology.

Our software also helps power others in the industry, and other free software, such as FreeCAD's BIM Workbench.

Our team

Dion Moult

Admin

Thomas Krijnen

Admin