Open Source & Licences

The open-source software, fonts and third-party content used by XR2ACH and this website – with their authors and licences.

XR2ACH builds on the work of many others. Here we name the software, fonts and third-party content used in the learning environment, the backend and this website. Our thanks to all their authors.

XR2ACH is a publicly funded research and development project; the application is a research prototype, not a commercial product. The project’s source code is to be published on OpenCode under an open licence. That licence covers only the project’s own source code and content – the components listed below keep their own licences.

Learning environment (XR application)

ComponentAuthorUseLicence
UnityUnity TechnologiesReal-time 3D engineproprietary, Unity Terms of Service
OpenXRThe Khronos GroupOpen standard for device integrationApache 2.0 (OpenXR SDK)
UbiqUniversity College LondonMulti-user networkingApache 2.0
OmiLAXRGörzen et al.Learning data capture (xAPI) in XR–
TinCan.NETRustici SoftwarexAPI libraryApache 2.0

The Unity runtime contained in distributed builds is under Unity’s terms and is not part of the project’s open licence.

Backend

ComponentAuthorUseLicence
KeycloakKeycloak project (Cloud Native Computing Foundation)Sign-in and identities (OpenID Connect)Apache 2.0
SQL LRSYet AnalyticsLearning Record Store (xAPI)Apache 2.0
MoodleMoodle Pty Ltd and communityLearning management systemGPL 3.0 or later
PostgreSQLPostgreSQL Global Development GroupDatabasePostgreSQL Licence
nginxF5, Inc. and contributorsReverse ProxyBSD-2-Clause

Content tools

ToolAuthorUseLicence
BlenderBlender FoundationPreparing CAD models for real-time 3DGPL 2.0 or later

Third-party content

ContentAuthorUseTerms
Compressor CAD modelsBITZER Kühlmaschinenbau GmbH3D models in the learning environment, images on this websitewith BITZER’s permission; not part of the project’s open licence
VR nugget figuresHorst, Naraghi-Taghi-Off, Rau & Dörner (2022), Frontiers in Virtual Realitypage DidacticsCC BY 4.0

This website

ComponentAuthorLicence
AstroAstro Technology Company and contributorsMIT
AstroWind (template)arthelokyoMIT
Tailwind CSSTailwind LabsMIT
Tabler IconsPaweł KunaMIT
KeystaticThinkmillMIT
ReactMeta Platforms and contributorsMIT
Paper ShadersPaperApache 2.0
sharp (image processing)Lovell FullerApache 2.0
country-flag-iconscatamphetamineMIT

Fonts

FontAuthorLicence
InterRasmus AnderssonSIL Open Font License 1.1
D-DIN, D-DIN ProDatto, Inc.SIL Open Font License 1.1

Is something missing or wrong? Please get in touch.