# Forge KUI Commercial Source License

Paid engine source access for internal use, modification and compilation; no redistribution of engine source or source-built outputs.

## Draft status and covered versions

Revision 0.1 · Draft, not yet effective. These terms apply only when an authorized licensor supplies a final agreement with a specified SDK or source order. Display on this website does not change existing licenses. The current local repository and SDK still include MIT texts; package licenses, ownership and third-party notices must be reconciled before a release under the new terms.

## 1. Parties and covered materials

The licensor and licensee are the parties identified in the valid source order or signed agreement. “Engine Materials” means engine implementation source listed in the delivery manifest and licensable by the licensor, identifiable copied portions and modified versions of that source, and object files, static libraries, dynamic libraries or executables containing materials compiled, linked or transformed wholly or partly from that source. Sections 5 and 6 separately govern independent application code and third-party components.

## 2. Permitted source use

After paying the agreed fees and meeting the order conditions, the licensee receives non-exclusive, non-transferable rights to read, debug, modify and compile Engine Materials for internal development, testing and internal business operation, within the entities, personnel, versions and duration specified in the order. Necessary internal backups are permitted. No sublicensing or external distribution right is included. Upgrades, support and delivery scope follow the order; source purchase alone is not a service commitment.

## 3. Redistribution prohibition

Without separate written permission from the licensor, Engine Materials must not be supplied to any person or organization outside the licensed entity, whether free or paid, publicly or privately. This includes original or modified engine source, patches and derivative code containing engine implementation, and binaries of any version built from the delivered source. Libraries and engines compiled from that source may not be redistributed even if the source was not modified.

## 4. Embedding and delivery

The redistribution prohibition also covers source-built outputs statically linked, merged, packaged or otherwise embedded in an application. Placing a source-built engine in an executable, installer or container does not remove the restriction. Delivery of a modified engine or an application containing a source-built engine requires separate written distribution permission in advance. Building and distributing applications with the official precompiled SDK remains permitted under its separate free SDK license; buying source does not remove that independent right.

## 5. Application and independent code rights

Independently written interfaces, scripts, application logic and independent extensions using public APIs remain owned by their rights holders. Calling an API alone does not make that code Engine Materials under this agreement, and such independent code may be licensed and distributed separately. Copied or included engine implementation, and source-built engine portions contained in an application, remain restricted. Headers, bindings and examples expressly redistributable with the official SDK follow that SDK license.

## 6. Independent third-party licenses

Third-party open-source or commercial components remain under their original licenses; delivery with the engine does not make them the licensor’s proprietary code. This agreement does not restrict copying, modification, distribution or source-access rights granted by those licenses, or waive their requirements. Mixed files, patches and build outputs must distinguish third-party portions from Forge KUI-owned engine content. Restrictions on the latter must not obstruct compliance required by third-party licenses. License compatibility must be confirmed before delivery.

## 7. Source custody and access

The licensee must take reasonable measures against disclosure, preserve ownership and license notices, and allow access only to personnel authorized by the order and bound by appropriate confidentiality obligations. Engine Materials must not be uploaded to public repositories, artifact registries or publicly accessible storage. Affiliates, customers and contractors receive no automatic access through their relationship with the licensee; required access must be specified in written authorization. Supplying source to tools or services must also comply with that access scope and confidentiality requirements. For legally required disclosure, notify the licensor in advance where lawful and disclose only what is required.

## 8. Ownership and independent rights

Existing engine intellectual property remains with its rights holders. Engine modifications do not remove restrictions on existing content. Rights the licensee may hold in its own additions do not grant permission to supply Engine Materials externally. This agreement does not require transfer of ownership in independent work to the licensor. Rights lawfully acquired or obtained under another valid license are not retroactively removed by this agreement.

## 9. Breach, termination and retention

Unauthorized disclosure or distribution of Engine Materials is a material breach. The licensor may follow the notice, cure and termination procedures set out in the final order. On expiry or lawful termination, cease the covered source and source-built use and distribution, and delete or return restricted copies. Legally required archival copies remain confidential and may not be used for development or operation. Breach does not affect available legal remedies or automatically cancel separately acquired lawful rights to the official precompiled SDK.

## 10. Warranty, liability and final order

Except as separately agreed in writing or required by mandatory law, Engine Materials are provided as is, without a promise of defect-free operation or fitness for a particular purpose. Disclaimers and liability limits apply only where lawful and do not exclude liability that cannot be excluded. The final order must identify the parties, delivery manifest, fees, license duration, authorized personnel, confidentiality arrangements, notice and cure procedures, liability terms, governing law, dispute process and language priority. This draft does not invent those unresolved terms. Only an explicit written exception signed by the licensor may add distribution rights.