University of Illinois/NCSA Open Source License (historical)

E291880

free software license open-source license permissive license software license

The University of Illinois/NCSA Open Source License is a permissive, non-copyleft free software license similar to the MIT or BSD licenses, historically used by projects such as LLVM.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (5)

Label	Occurrences
University of Illinois/NCSA Open Source License	2
NCSA License	1
UIUC/NCSA Open Source License	1
University of Illinois Open Source License	1
University of Illinois/NCSA Open Source License (historical) canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T2716421 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: University of Illinois/NCSA Open Source License (historical)
Context triple: [LLVM, license, University of Illinois/NCSA Open Source License (historical)]

A. Apache License 1.1
Apache License 1.1 is an older, permissive open-source software license from the Apache Software Foundation that preceded and was later replaced by Apache License 2.0.
B. Open Software License 3.0
Open Software License 3.0 is a copyleft open-source software license that permits free use, modification, and distribution of software while imposing conditions to protect authors’ rights and ensure source code availability.
C. Apache License 2.0
Apache License 2.0 is a permissive open-source software license from the Apache Software Foundation that allows broad use, modification, and distribution of licensed code with minimal restrictions.
D. Eclipse Public License
The Eclipse Public License is a widely used open-source software license that permits use, modification, and distribution of covered software while imposing certain copyleft-style obligations on derivative works.
E. MIT License
The MIT License is a widely used, permissive free software license that allows reuse with minimal restrictions, including in proprietary software.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: University of Illinois/NCSA Open Source License (historical)
Target entity description: The University of Illinois/NCSA Open Source License is a permissive, non-copyleft free software license similar to the MIT or BSD licenses, historically used by projects such as LLVM.

A. Apache License 1.1
Apache License 1.1 is an older, permissive open-source software license from the Apache Software Foundation that preceded and was later replaced by Apache License 2.0.
B. Open Software License 3.0
Open Software License 3.0 is a copyleft open-source software license that permits free use, modification, and distribution of software while imposing conditions to protect authors’ rights and ensure source code availability.
C. Apache License 2.0
Apache License 2.0 is a permissive open-source software license from the Apache Software Foundation that allows broad use, modification, and distribution of licensed code with minimal restrictions.
D. Eclipse Public License
The Eclipse Public License is a widely used open-source software license that permits use, modification, and distribution of covered software while imposing certain copyleft-style obligations on derivative works.
E. MIT License
The MIT License is a widely used, permissive free software license that allows reuse with minimal restrictions, including in proprietary software.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	free software license ⓘ open-source license ⓘ permissive license ⓘ software license ⓘ
allowsProprietaryUse	true ⓘ
allowsRelicensing	true ⓘ
alternativeName	NCSA License ⓘ linked to: University of Illinois/NCSA Open Source License (historical) UIUC/NCSA Open Source License ⓘ linked to: University of Illinois/NCSA Open Source License (historical) University of Illinois Open Source License ⓘ linked to: University of Illinois/NCSA Open Source License (historical)
category	non-copyleft free software license ⓘ
compliesWith	Free Software Definition ⓘ Open Source Definition ⓘ linked to: Open Source Initiative
copyleft	no ⓘ
FSFApproved	true ⓘ
grantsRight	copy ⓘ distribute ⓘ merge ⓘ modify ⓘ publish ⓘ sell copies ⓘ sublicense ⓘ use ⓘ
hasAttributionRequirement	true ⓘ
hasAuthor	National Center for Supercomputing Applications ⓘ University of Illinois at Urbana-Champaign ⓘ linked to: University of Illinois at Urbana–Champaign
hasNoAdvertisingClause	true ⓘ
hasNoTrademarkGrant	true ⓘ
hasPatentGrant	unclear or minimal (no explicit broad patent grant) ⓘ
includesClause	liability limitation ⓘ warranty disclaimer ⓘ
isCopyleft	false ⓘ
isDeprecatedForNewLLVMCode	true ⓘ
isGPLCompatible	true ⓘ
isTemplateBased	true ⓘ
jurisdiction	Illinois law (typical governing law clause in some variants) ⓘ
licenseType	permissive ⓘ
OSIApproved	true ⓘ
replacedBy	Apache License 2.0 with LLVM exceptions ⓘ
requires	copyright notice retention ⓘ inclusion of license text in redistributions ⓘ permission notice retention ⓘ
requiresSourceDisclosure	false ⓘ
similarTo	BSD 3-Clause License ⓘ linked to: BSD license MIT License ⓘ
usedByProject	Clang ⓘ LLVM ⓘ libc++ ⓘ
usedHistoricallyBy	LLVM project ⓘ linked to: LLVM

How these facts were elicited

Referenced by (6)

Full triples — surface form annotated when it differs from this entity's canonical label.

LLVM → license → University of Illinois/NCSA Open Source License (historical) ⓘ

University of Illinois/NCSA Open Source License → alternativeName → NCSA License ⓘ

subject linked to: University of Illinois/NCSA Open Source License (historical)