Q Public License Version 1.0

Also known as QPL-1.0.

Commercial use: not allowed
Share alike: not required
Attribution: required (keep the copyright and license notices)

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Write this as a license text (needs an account) DALICC reads the model above and writes what it permits, requires and prohibits in plain English. Without an account, the Text download above writes the model out from the vocabulary.

Canonical URI https://dalicc.net/licenselibrary/QPublicLicenseVersion10

Permissions

Derivative works from the text
Duties
- Notice from the text
- Source code from the text
Derive from the text
Display from the text
Distribute from the text
Duties
- Notice from the text
- Source code from the text
Modify from the text
No-warranty notice from the text
Present from the text
Reproduce from the text
Share alike from the text

Prohibitions

Add statement from the text
Charge distribution fee from the text
Charge license fee from the text
Commercial use from the text
Grant use from the text

License-wide duties

This license states no duties that apply to the work as a whole.

What applies by default

The statements above are the library's reading of this license: each is marked with the sentence it rests on, or as a library convention where the text is not explicit. The statements below are the ones the DALICC reasoner supplies for acts the license says nothing about, from the default rules of the dependency graph it reasons with. Each one names the legal source it rests on. None of it is in the record.

Promote by default rule (adopted)

This license says nothing about Promote, and the graph applies this reading in all jurisdictions it covers: it is not permitted unless the license permits it.

A licence that says nothing about endorsement is read as not allowing it: the licence gives the licensee no right to use the licensor's name or marks in a way that states or implies that the licensor endorses the licensee or its product, while stating truthfully that a work is based on or uses the licensed work is a different act that this rule does not decide. A copyright licence grants rights in the work, and the right to use a name or a trademark is a separate right under trademark law and the protection of names, which a silent copyright licence does not pass on. Combining a licence that is silent about endorsement with one that permits it shows a conflict marked as coming from this rule.

Basis Trademark and name rights are separate from copyright: Regulation (EU) 2017/1001 article 9 lets the proprietor of an EU trade mark prevent all third parties not having his consent from using the sign in the course of trade, and Directive (EU) 2015/2436 article 10, 15 U.S.C. 1114 and 1125(a), section 12 BGB and section 43 ABGB protect marks and names in the same way. The library's evidence is Creative Commons 4.0 section 2(b)(2): Patent and trademark rights are not licensed under this Public License. A copyright licence that is silent grants no right to use the licensor's name or marks to suggest endorsement (Worldwide)

Clauses

Warranty disclaimer

The Software and this license document are provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Limitation of liability

In no event shall the initial developers or copyright holders be liable for any damages whatsoever, including - but not restricted to - lost revenue or profits or other direct, indirect, special, incidental or consequential damages, even if they have been advised of the possibility of such damages, except to the extent invariable law, if any, provides otherwise.

Info

Target asset types: Software
Region / jurisdiction: Worldwide
Validity: Perpetual
Source: http://opensource.org/licenses/QPL-1.0
Legal code: http://opensource.org/licenses/QPL-1.0
This description is published under: Creative Commons Attribution 4.0 International
Publisher: Trolltech AS
Attribution name: Trolltech AS
SPDX identifier: QPL-1.0 on the SPDX license list
DALICC identifier: QPublicLicenseVersion10

This record is published under CC BY 4.0. Credit it as: DALICC License Library, DALICC - Verein zur Förderung der Rechtssicherheit in der Datenbewirtschaftung, https://dalicc.net, CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). The license it describes belongs to its publisher.

Use this license

Everything below is generated from this record. Replace the example address with the address of your own work.

JSON sidecar

{
  "license-uri": "https://dalicc.net/licenselibrary/QPublicLicenseVersion10",
  "license-title": "Q Public License Version 1.0",
  "spdx-id": "QPL-1.0",
  "asset": null,
  "generated-by": "DALICC"
}

RDF, Turtle

@prefix cc: <http://creativecommons.org/ns#> .

<https://example.org/my-work>
    cc:license <https://dalicc.net/licenselibrary/QPublicLicenseVersion10> .

RDF, JSON-LD

{
  "@context": {
    "cc": "http://creativecommons.org/ns#"
  },
  "@id": "https://example.org/my-work",
  "cc:license": {
    "@id": "https://dalicc.net/licenselibrary/QPublicLicenseVersion10"
  }
}

This license carries no attribution duty, so no credit line is offered here.

Badge

Markdown

[![License: Q Public License Version 1.0](https://dalicc.net/license-library/QPublicLicenseVersion10/badge.svg)](https://dalicc.net/license-library/QPublicLicenseVersion10)

HTML

<a href="https://dalicc.net/license-library/QPublicLicenseVersion10"><img src="https://dalicc.net/license-library/QPublicLicenseVersion10/badge.svg" alt="License: Q Public License Version 1.0"></a>

Review

Status: Reviewed against the license text
Last checked: 2026-09-15
Reviewer: Giray Havur
Verdict: corrected during the review
Record changed since this review: yes (version 2, 2026-09-24)
Findings: 7 recorded, 3 applied to the record, 2 proposed

The Q Public License lets the Software be copied and distributed unmodified, modifications to be distributed separately as patches, and executables to be distributed if source is available to every recipient. The record captures the notice and source duties but prohibits commercial use, which the text does not, and models share-alike as a permission where the text makes it a condition. The SPDX id and the liability clause were added.

7 findings

minor Rubric 1 spdx:licenseId applied

Added QPL-1.0; the title matches the SPDX name.
minor Rubric 6 dalicc:LiabilityLimitation applied

The section headed "Limitations of Liability" was not recorded. Added, quoted.
major Rubric 4 odrl:prohibition proposed

cc:CommercialUse is prohibited. Nothing in the license forbids commercial use of the Software: clause 5 allows the licensee "to compile, link and run application programs legally developed by you or by others" with no field-of-use limit. What the license does restrict is charging, and only in two places: clause 4(b) requires source to be available "without any charge beyond the costs of data transfer", and clause 6(b) requires recipients of linked items to be able to redistribute "without any charges whatsoever". Those restrictions are already modelled as the dalicc:chargeDistributionFee and dalicc:chargeLicenseFee prohibitions, so the commercial-use prohibition is a third, broader statement that the text does not support. Not applied because clause 6(b) makes the boundary genuinely arguable.
major Rubric 5 odrl:permission proposed

cc:ShareAlike is modelled as a permission. Clause 4(c) makes it a condition: "You must ensure that all modifications included in the machine-executable forms are available under the terms of this license." It should be a license-wide duty. Not applied together with the commercial-use finding, because the two decide the compatibility profile of the record jointly and belong in a decision of the association.
minor Rubric 7 cc:jurisdiction none

The closing section states: "This license is governed by the Laws of Norway. Disputes shall be settled by Oslo City Court." cc:jurisdiction is dalicc:worldwide.
gap Rubric 8 vocabulary none

Clause 3(b) grants the initial developer a licence back to every modification the licensee releases, and clause 3 requires modifications to be distributed separately from the Software, as patches. Neither has a term. Proposed: dalicc:grantBack, dalicc:separatePatchDistribution.
minor Rubric 4 odrl:prohibition applied

dalicc:promote was prohibited and no sentence of this text supports it. The statement was the library's reading of a legal default, that a copyright licence which says nothing about endorsement grants no right to it, and it sat in 519 of 581 records as a house convention. That reading is now an adopted dalicc:DefaultRule of the core dependency graph, which supplies it to every licence that is silent about the action, so a compatibility check reaches the same answer and the record states only what the text states. Removed on 2026-09-23; see section 13 of docs/LICENSE_REVIEW.md.

Report an issue The review record as JSON The review checks the model against the license text. It is not legal advice.

History

This license model has 2 versions. Version 2 is the one served today; every earlier version keeps its own address, so a conclusion drawn from one of them can still be checked against it.

Version 2 current2026-09-24 Giray Havur

The content review of 2026-09-15 added 1 clause text and 1 identification detail and recorded the review state. Later changes left endorsement to the default rule of the core dependency graph and named the license the record itself is published under.

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6 changes
- added dalicc:LiabilityLimitation "In no event shall the initial developers or copyright holders be liable for any damages whatsoever, including - but not restricted to - lost revenue or profits or other direct, indirect, special, incidental or consequential damages, even if they have been advised of the possibility of such damages, except to the extent invariable law, if any, provides otherwise."
  
  Review finding The section headed "Limitations of Liability" was not recorded. Added, quoted.
- added dalicc:reviewStatus dalicc:Reviewed
  
  Review state Every record records how far it has come in the editorial workflow and when it was last checked against the legal text.
- added dalicc:reviewedOn "2026-09-15"^^xsd:date
  
  Review state Every record records how far it has come in the editorial workflow and when it was last checked against the legal text.
- added spdx:licenseId "QPL-1.0"
  
  Review finding Added QPL-1.0; the title matches the SPDX name.
- removed prohibition dalicc:promote
  
  Manual edit The endorsement prohibition rested on no sentence of the text; the default rule for endorsement now supplies it.
- added dct:license <https://creativecommons.org/licenses/by/4.0/>
  
  Manual edit Every record is published under CC BY 4.0. cc:license names the record DALICC keeps of that licence; dct:license now names it by the address Creative Commons publishes it at, so that a consumer matching the canonical IRI finds it.
Version 1

The version this model had before the content review of 2026-09-15.

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Every change names the reason behind it: a finding of the content review, one of its library-wide decisions, the metadata that review wrote onto every record, or a hand edit. None of it is legal advice.

Nothing on this page is legal advice. What a license means is decided by its text; ask a legal advisor before you rely on it.