Open Collective

IfcOpenShell

COLLECTIVE
Open source
openbim
ifc
bim
architecture
engineering
construction
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 pageIfcOpenShell
Contribute
Budget
About
Today's Balance
$18,970.47
Estimated Annual Budget
$42,122
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

+ 47
Custom contribution
Donation
Make a custom one-time or recurring contribution.

Latest activity by

+ 283

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

1
Cyril Waechter BIM Insight

$10,000 USD since Nov 2022

2
BIMvoice

$6,510 USD since Jul 2023

3
PlaniBIM SA

$3,800 USD since Feb 2023

4
OpeningDesign

$2,654.98 USD since Apr 2023

5
Spectar

$950 USD since Jan 2021

6
Aether Engineering

$530 USD since Sep 2022

7
Tietoa Finland Oy

$500 USD since Feb 2022

8
AECO DEV

$360 USD since Nov 2025

9
Vyer Technologies

$350 USD since Aug 2025

10
Speckle

$200 USD since Nov 2025

Individuals

1
FOSS-is-the-future

$12,800 USD since Feb 2024

2
BAUPUNKTNULL AG

$3,250 USD since Dec 2022

3
Randolph

$3,100 USD since Aug 2023

4
Matthew Fuller

$2,150 USD since Apr 2021

5
1ncognito

$2,050 USD since Oct 2023

6
Gortemaker Algra Feenstra

$2,024 USD since Dec 2024

7
CORE Digital Engineering

$1,700 USD since Nov 2024

8
carlopav

$1,655 USD since Nov 2022

9
Dion Moult

$1,550 USD since Dec 2020

10
Mats Norén

$1,500 USD since Dec 2020

IfcOpenShell is all of us

Our contributors 287

Thank you for supporting IfcOpenShell.

Dion Moult

Admin

$1,550 USD

Thomas Krijnen

Admin

$150 USD

FOSS-is-the-f...

Corporate Sponsor

$12,800 USD

Cyril Waechte...

Corporate Sponsor

$10,000 USD

BIMvoice

Corporate Sponsor

$6,510 USD

(CLOSED - PAI...

$4,992 USD

PlaniBIM SA

Corporate Sponsor

$3,800 USD

BAUPUNKTNULL AG

$3,250 USD

Randolph

Corporate Sponsor

$3,100 USD

OpeningDesign

Basic Corporate

$2,655 USD

Matthew Fuller

Basic Corporate

$2,150 USD

1ncognito

Corporate Sponsor

$2,050 USD

Budget

Transparent and open finances.

Monthly financial contribution to IfcOpenShell (Just chip...

Credit from Wojtek to IfcOpenShell •

+$5.00USD
Completed
Contribution #935777
Monthly financial contribution to IfcOpenShell (An indivi...

Credit from Losepacific to IfcOpenShell •

+$20.00USD
Completed
Contribution #600488

Development on the Bonsai Add-on, 12-28 Dec

Category
Maintenance and Development
from Andrej to IfcOpenShell •
-$726.00 USD
Paid
$
Today’s balance

$18,970.47 USD

Total raised

$86,014.15 USD

Total disbursed

$67,043.68 USD

Estimated annual budget

$42,121.66 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