That Open Company

Become a BIM Software Developer and Enter a Brand-New Market Full of Opportunities. Sign up for the waiting list.

Open tech you can build on

Own your tools, keep your data, and ship AECO software faster, with zero vendor lock-in.

Fragments

Learn the format and what it enables.

Explore Fragments

That Open Engine

Build with the libraries (viewer + tools)

Explore That Open Engine

What you can do (today)

Build web-native BIM apps

without vendor lock-i

Stream massive BIM models

and collaborate in real time.

Read, edit and create

BIM data

Read, edit and create

BIM data

thanks to fragments, the web-native open BIM format.

Integrate with your

stack

Integrate with your

stack

(IFC, databases, cloud, GIS).

Control your data & monetization

on your terms.

Build these apps (real examples)

3D BIM Viewer
fast loading, smart filtering
Model Review & Coordination
issues, viewpoints, approvals.
Compliance & QA
requirement checks and reports.
Quantities & Analysis
lengths, areas, volumes.
Construction Tracking
live markers and status overlays.
GIS/BIM Viewers
2D/3D navigation and cross-sections.

3D BIM Viewer
fast loading, smart filtering
Model Review & Coordination
issues, viewpoints, approvals.
Compliance & QA
requirement checks and reports.
Quantities & Analysis
lengths, areas, volumes.
Construction Tracking
live markers and status overlays.
GIS/BIM Viewers
2D/3D navigation and cross-sections.

Build these apps (real examples)

3D BIM Viewer

fast loading, smart filtering

Model Review & Coordination

issues, viewpoints, approvals.

Compliance & QA

requirement checks and reports.

Quantities & Analysis

lengths, areas, volumes.

Construction Tracking

live markers and status overlays.

GIS/BIM Viewers

2D/3D navigation and cross-sections.

Why this is different

Open by default (MIT)

Use it, modify it, ship products

Performance by design

Binary, lightweight, deduplicated data flows

Future-proof & interoperable

Works alongside IFC and modern web stacks

Community momentum

Talent you can hire, knowledge you can reuse

Commercial freedom

You own your IP, pricing, and roadmap

The open-core model

Fragments

(format)

performance-focused, open foundation for streaming & querying.

That Open Engine

(libraries)

open-source viewer + tools to build web-native AECO apps.

That Open Platform

(Optional)

operational layer to develop, deploy, and run apps at scale.

When to use what

Building and hosting your own product (with a dev team)?

Use Fragments + That Open Engine.

If you want strategic/technical guidance while you build, join That Open Accelerator.

I need guidance

Need enterprise operations or a turnkey app?

That Open Platform is the way.

If you’re an AECO company without dev capacity, we’ll build it for you via the Custom Apps Program (apps are delivered on That Open Platform).

I want my own custom-app

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Blog

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Accelerator Program

Custom Apps Program

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Community

[Mail us]

[Navigation]

Blog

[Services]

Accelerator Program

Custom Apps Program

[Follow us]

GitHub

Community

[Mail us]

[Navigation]

Blog

[Services]

Accelerator Program

Custom Apps Program

[Follow us]

GitHub

Community

[Mail us]

[Navigation]

Blog

[Services]

Accelerator Program

Custom Apps Program

[Follow us]

GitHub

Community

[Mail us]

[Navigation]

Blog

[Services]

Accelerator Program

Custom Apps Program

[Follow us]

GitHub

Community

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