Licences and attribution
Open-source software, typefaces and sample content used by this service, and their licences.
Included software notices
This service includes third-party software under the Apache License 2.0 and other open-source licences. The required notices and licence texts are reproduced below.
NOTICE
LineTakeoff
Copyright 2026 the LineTakeoff owner (legal name to be supplied by the owner)
This product includes software licensed under the Apache License, Version 2.0:
OpenTakeoff
Copyright 2026 Kentucky AI and the OpenTakeoff contributors
jsts 2.12.1 is used under the Eclipse Distribution License 1.0 (EDL-1.0).
Listed modifications to included Apache-2.0 software: none.
jsts 2.12.1 is offered under EDL-1.0 or EPL-1.0; this service elects the Eclipse Distribution License 1.0. Eclipse Distribution License 1.0 (external link)
Typefaces
- Archivo — SIL Open Font License 1.1
- IBM Plex Sans Hebrew — SIL Open Font License 1.1
- IBM Plex Mono — SIL Open Font License 1.1
Self-hosted, unmodified and not subset. “Plex” is a Reserved Font Name.
Other open-source components and their licences
PDF rendering: PDF.js (Apache-2.0)
The web pages also include these open-source libraries, each under its own licence:
| React, React DOM, scheduler, use-sync-external-store | MIT |
|---|---|
| React Router | MIT |
| React Aria Components, React Aria, React Stately, @internationalized | Apache-2.0 |
| intl-messageformat | BSD-3-Clause |
| @formatjs message parser | MIT |
| Firebase JavaScript SDK (sign-in pages) | Apache-2.0 |
| Zod | MIT |
| clsx | MIT |
| idb | ISC |
Third-party licences in this build
The sample drawings and their data are synthetic, created for this service. They show no real building, address or client.