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2026

PolyForm Strict License 1.0.0

Also known as PolyForm Strict 1.0.0, PolyForm-Strict-1.0.0, Polyform Strict License 1.0.0.

Commercial use
not allowed
Share alike
not required
Attribution
not required
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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/PolyForm-Strict-1.0.0

Permissions

  • Display from the text Showing the work to the public without making a copy the viewer keeps.
  • Patent grant from the text Granting a license under the patent claims that a contributor holds and that the contribution necessarily infringes.
  • Present from the text Performing the work in public, including by broadcast or other communication to the public.
  • Reproduce from the text Making copies of the work in any form.

Prohibitions

  • Change license from the text Not permitted: Change license. Replacing the license of the work, or of an adaptation, with another license, or changing its terms.
  • Commercial use from the text Not permitted: Commercial use. Using the work to generate income, directly or indirectly, for example by selling it or by using it in advertising.
  • Derivative works from the text Not permitted: Derivative works. Distributing an adaptation of the work and making it available to the public.
  • Derive from the text Not permitted: Derive. Creating a new work from the work, such as a translation, adaptation or arrangement of it or of a part of it.
  • Distribute from the text Not permitted: Distribute. Providing copies of the work to the public or to anyone else.
  • Modified works from the text Not permitted: Modified works. Distributing a modified version of the work that does not amount to a new, derivative work.
  • Modify from the text Not permitted: Modify. Altering the work, for example by updating it, without creating a new work; an alteration that creates a new work is Derive.
  • Sublicense from the text Not permitted: Sublicense. The text says: "These terms do not allow you to sublicense or transfer any of your licenses to anyone else, or prevent the licensor from granting licenses to anyone else." Granting a third party rights in the work under a license of the licensee's own, rather than passing on the original license.

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) Using the name or trademarks of the licensor or of contributors to endorse or promote a product.

    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)

Further terms

These are the things the license says about itself beyond the acts it permits, forbids and requires: when it ends, how long there is to put a breach right, which law governs it, and so on. A term that comes from the DALICC vocabulary links to its definition.

Patent license ends if you sue
Yes. Not a ban on suing: a patent claim over the work ends the patent license, or the whole license, as the text provides.
Cure period
32 days
Field of use restriction
any noncommercial purpose, including personal use and use by a charitable, educational, public research, public safety or health, environmental protection or government organization
Terminates on breach
Yes

Clauses

Warranty disclaimer

As far as the law allows, the software comes as is, without any warranty or condition, and the licensor will not be liable to you for any damages arising out of these terms or the use or nature of the software, under any kind of legal claim.

Additional clauses

In order to get any license under these terms, you must agree to them as both strict obligations and conditions to all your licenses.

Info

Target asset types
Software
Region / jurisdiction
Worldwide
Validity
Perpetual
Source
https://polyformproject.org/licenses/strict/1.0.0
Legal code
https://polyformproject.org/licenses/strict/1.0.0
This description is published under
Creative Commons Attribution 4.0 International
Publisher
PolyForm Project
SPDX identifier
PolyForm-Strict-1.0.0 (provisional, the record declares none)
Version
1.0.0
DALICC identifier
PolyForm-Strict-1.0.0

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/PolyForm-Strict-1.0.0",
  "license-title": "PolyForm Strict License 1.0.0",
  "spdx-id": null,
  "asset": null,
  "generated-by": "DALICC"
}

RDF, Turtle 

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

<https://example.org/my-work>
    cc:license <https://dalicc.net/licenselibrary/PolyForm-Strict-1.0.0> .

RDF, JSON-LD 

{
  "@context": {
    "cc": "http://creativecommons.org/ns#"
  },
  "@id": "https://example.org/my-work",
  "cc:license": {
    "@id": "https://dalicc.net/licenselibrary/PolyForm-Strict-1.0.0"
  }
}

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

Badge DALICC badge for PolyForm Strict License 1.0.0

Markdown 

[![License: PolyForm Strict License 1.0.0](https://dalicc.net/license-library/PolyForm-Strict-1.0.0/badge.svg)](https://dalicc.net/license-library/PolyForm-Strict-1.0.0)

HTML 

<a href="https://dalicc.net/license-library/PolyForm-Strict-1.0.0"><img src="https://dalicc.net/license-library/PolyForm-Strict-1.0.0/badge.svg" alt="License: PolyForm Strict License 1.0.0"></a>

Review

Written from the license text by
Giray Havur
Written on
2026-09-22
Second review
not yet done
Record changed since this review
yes (version 2, 2026-09-24)
Findings
12 recorded, 9 applied to the record, 0 proposed

The record models the PolyForm Strict License 1.0.0, the narrowest of the PolyForm set. The permitted purposes are the noncommercial ones, and the copyright licence expressly stops short of distribution and of changes or new works, so the licensee may run and read the software and nothing else. It is not an open source licence.

12 findings

  • info Rubric 1 spdx:licenseId applied

    File name, record identifier and IRI local name agree. The triple is left out: the SPDX list does not carry this licence and no identifier is invented. cc:legalcode and dct:source are the URL the licence text gives for itself.

  • minor Rubric 1 dct:title applied

    The published text heads itself 'Polyform Strict License 1.0.0' with a small f, while the project and the other three texts write 'PolyForm'. dct:title uses the project's spelling and the text's spelling is carried as a dct:alternative, so a search for either finds the record.

  • minor Rubric 1 dct:source applied

    The publisher's page for this licence answered with an HTTP 404 when the text was fetched, so the text quoted is the copy held by ScanCode LicenseDB, whose URL is in text_source.

  • info Rubric 2 odrl:target applied

    dcmitype:Software only, the same as the other PolyForm records.

  • major Rubric 3 odrl:permission applied

    One grant, cut short by its own words: 'The licensor grants you a copyright license for the software to do everything you might do with the software that would otherwise infringe the licensor's copyright in it for any permitted purpose, other than distributing the software or making changes or new works based on the software.' What is left is odrl:reproduce, odrl:display and odrl:present, plus dalicc:patentGrant for the patent licence, which this text keeps.

  • major Rubric 4 odrl:prohibition applied

    odrl:distribute, odrl:modify, odrl:derive, cc:DerivativeWorks and dalicc:ModifiedWorks are prohibited, because the grant carves them out by name and 'These terms do not imply any other licenses.' cc:CommercialUse is prohibited for the same reason as in PolyForm-Noncommercial-1.0.0: the permitted purposes are exhaustively noncommercial. dalicc:sublicense, dalicc:ChangeLicense and dalicc:patentRetaliationTermination follow the other PolyForm records.

  • major Rubric 5 odrl:duty applied

    The record carries no duty. This text has no Notices section at all, because a licensee who may not distribute has nobody to pass a notice to. That is the one place where the PolyForm skeleton loses a whole section rather than swapping the permitted-purpose clause. Family rule 6, which expects every record to carry an attribution or a notice duty, therefore reports this record. The report is correct and the record is correct: the licence has no such clause, and the only other records in that position are a public domain dedication and a research-use licence.

  • major Rubric 6 dalicc:WarrantyDisclaimer applied

    The No Liability sentence is quoted whole into dalicc:WarrantyDisclaimer, with the emphasis asterisks dropped. Ten further clauses are quoted in dalicc:additionalClauses.

  • major Rubric 7 dalicc:terminatesOnBreach applied

    dalicc:terminatesOnBreach is true and dalicc:curePeriod is '32 days', which is the unusual figure the Violations section gives: 'The first time you are notified in writing that you have violated any of these terms ... your licenses can nonetheless continue if you come into full compliance with these terms, and take practical steps to correct past violations, within 32 days of receiving notice.' The cure is available once only. cc:jurisdiction stays dalicc:worldwide and the text names no governing law.

  • gap Rubric 8 dalicc:fieldOfUseRestriction none

    As in PolyForm-Noncommercial-1.0.0, the permitted-purpose mechanism has no term and dalicc:fieldOfUseRestriction names the field in a literal. Proposed term: dalicc:permittedPurpose.

  • info Rubric 9 record none

    The consistency check of app.services.composer, run against licensedata/dependencygraph/dg_default.ttl, returned no conflicts. Prohibiting odrl:distribute, odrl:modify and odrl:derive while permitting odrl:reproduce raises nothing, because none of the three is a special case of reproduction in the dependency graph.

  • major Rubric 10 record none

    Against PolyForm-Noncommercial-1.0.0 this record keeps the same permitted purposes and the same patent terms and differs in the grant: five permissions become prohibitions and the three notice duties disappear with the Notices section. It is the only record in the library that prohibits odrl:distribute, odrl:modify and odrl:derive together.

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.

  1. Version 2 current2026-09-24 Giray Havur

    The changes since version 1 recorded which sentence of the text each statement rests on, named the license the record itself is published under and removed the quotes that do not name the act they support.

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    12 changes

    • changed prohibition cc:DerivativeWorks

      was prohibition cc:DerivativeWorks

      Manual edit The statement now quotes the sentence of the licence text it rests on: "These terms do not imply any other licenses."

    • changed prohibition dalicc:ModifiedWorks

      was prohibition dalicc:ModifiedWorks

      Manual edit The statement now quotes the sentence of the licence text it rests on: "These terms do not imply any other licenses."

    • changed prohibition dalicc:sublicense

      was prohibition dalicc:sublicense

      Manual edit The statement now quotes the sentence of the licence text it rests on: "These terms do not allow you to sublicense or transfer any of your licenses to anyone else, or prevent the licensor from granting licenses to anyone else."

    • changed prohibition odrl:derive

      was prohibition odrl:derive

      Manual edit The statement now quotes the sentence of the licence text it rests on: "These terms do not imply any other licenses."

    • changed prohibition odrl:distribute

      was prohibition odrl:distribute

      Manual edit The statement now quotes the sentence of the licence text it rests on: "These terms do not imply any other licenses."

    • changed prohibition odrl:modify

      was prohibition odrl:modify

      Manual edit The statement now quotes the sentence of the licence text it rests on: "These terms do not imply any other licenses."

    • 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.

    • changed prohibition cc:DerivativeWorks

      was prohibition cc:DerivativeWorks

      Manual edit Removed the quoted evidence of prohibition cc:DerivativeWorks, prohibition dalicc:ModifiedWorks, prohibition odrl:derive, prohibition odrl:distribute, prohibition odrl:modify: the quoted sentence does not name the act. The statements stay, read from the text without a linked quote.

    • changed prohibition dalicc:ModifiedWorks

      was prohibition dalicc:ModifiedWorks

      Manual edit Removed the quoted evidence of prohibition cc:DerivativeWorks, prohibition dalicc:ModifiedWorks, prohibition odrl:derive, prohibition odrl:distribute, prohibition odrl:modify: the quoted sentence does not name the act. The statements stay, read from the text without a linked quote.

    • changed prohibition odrl:derive

      was prohibition odrl:derive

      Manual edit Removed the quoted evidence of prohibition cc:DerivativeWorks, prohibition dalicc:ModifiedWorks, prohibition odrl:derive, prohibition odrl:distribute, prohibition odrl:modify: the quoted sentence does not name the act. The statements stay, read from the text without a linked quote.

    • changed prohibition odrl:distribute

      was prohibition odrl:distribute

      Manual edit Removed the quoted evidence of prohibition cc:DerivativeWorks, prohibition dalicc:ModifiedWorks, prohibition odrl:derive, prohibition odrl:distribute, prohibition odrl:modify: the quoted sentence does not name the act. The statements stay, read from the text without a linked quote.

    • changed prohibition odrl:modify

      was prohibition odrl:modify

      Manual edit Removed the quoted evidence of prohibition cc:DerivativeWorks, prohibition dalicc:ModifiedWorks, prohibition odrl:derive, prohibition odrl:distribute, prohibition odrl:modify: the quoted sentence does not name the act. The statements stay, read from the text without a linked quote.

  2. Version 1

    Created from the license text on 2026-09-22 (Source-available licences and riders).

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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.