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2026

ISC License

Also known as ISC.

Commercial use
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/IscLicense

Permissions

  • Change license by library convention Library convention: family rule 15: Permissive records permit relicensing. Replacing the license of the work, or of an adaptation, with another license, or changing its terms.

    Duties

    • Use a compliant license by library convention Library convention: family rule 15: Permissive records permit relicensing. Choosing a replacement license that stays compliant with the terms of the original license.
  • Charge distribution fee from the text The text says: "Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies." Charging a fee for the act of providing a copy of the work to someone else.
  • Charge license fee from the text Charging a fee for granting someone a license to the work.
  • Commercial use from the text 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 Distributing an adaptation of the work and making it available to the public.
  • Derive from the text Creating a new work from the work, such as a translation, adaptation or arrangement of it or of a part of it.

    Duties

    • Attribution from the text Giving credit to the copyright holders or authors of the work, in the form the licensor asks for.
    • Notice from the text Notice: keeping the license and copyright notices with every copy.
  • Display from the text Showing the work to the public without making a copy the viewer keeps.
  • Distribute from the text Providing copies of the work to the public or to anyone else.

    Duties

    • Attribution from the text Giving credit to the copyright holders or authors of the work, in the form the licensor asks for.
    • Notice from the text Notice: keeping the license and copyright notices with every copy.
  • Modified works from the text Distributing a modified version of the work that does not amount to a new, derivative work.
  • Modify from the text Altering the work, for example by updating it, without creating a new work; an alteration that creates a new work is Derive.

    Duties

    • Attribution from the text Giving credit to the copyright holders or authors of the work, in the form the licensor asks for.
    • Notice from the text Notice: keeping the license and copyright notices with every copy.
  • 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

This license states no prohibitions.

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)

Clauses

Warranty disclaimer

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.

Limitation of liability

IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

Info

Target asset types
Software
Region / jurisdiction
Worldwide
Validity
Perpetual
Source
http://opensource.org/licenses/ISC
Legal code
http://opensource.org/licenses/ISC
This description is published under
Creative Commons Attribution 4.0 International
SPDX identifier
ISC on the SPDX license list
DALICC identifier
IscLicense

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/IscLicense",
  "license-title": "ISC License",
  "spdx-id": "ISC",
  "attribution": "Copyright (c) [year] [copyright holder]",
  "asset": null,
  "generated-by": "DALICC"
}

RDF, Turtle 

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

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

RDF, JSON-LD 

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

HTML attribution 

<p>This work is licensed under <a href="https://dalicc.net/licenselibrary/IscLicense" rel="license">ISC License</a>.</p>

This license asks for attribution, so the credit line is part of it.

Badge DALICC badge for ISC License

Markdown 

[![License: ISC License](https://dalicc.net/license-library/IscLicense/badge.svg)](https://dalicc.net/license-library/IscLicense)

HTML 

<a href="https://dalicc.net/license-library/IscLicense"><img src="https://dalicc.net/license-library/IscLicense/badge.svg" alt="License: ISC License"></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
6 recorded, 4 applied to the record, 1 proposed, 1 settled in a later version

The ISC license is the Zero Clause BSD text plus one condition: the copyright notice and the permission notice must appear in all copies. The record modelled only cc:Attribution for that condition, dropping the permission notice, and had no SPDX id. Both were fixed, and the explicit right to charge a fee was added.

5 findings

  • minor Rubric 1 spdx:licenseId applied

    Added the SPDX list id ISC.

  • major Rubric 5 odrl:duty applied

    The condition reads: "provided that the above copyright notice and this permission notice appear in all copies". The record required cc:Attribution only. Added cc:Notice to the distribute, modify and derive duties, matching MIT and the BSD records.

  • minor Rubric 3 odrl:permission applied

    The grant is "for any purpose with or without fee". dalicc:chargeDistributionFee was already permitted; added dalicc:chargeLicenseFee so that the record says the same as 0BSD, whose text is this text minus the notice condition.

  • minor Rubric 3 odrl:permission proposed

    odrl:grantUse is not permitted here although 0BSD permits it on a text that grants strictly less. The ISC text does not use the word sublicense, so this is left open.

  • major Rubric 10 record applied

    Standard-license addition of 2026-09-15, decision 9: the record was corrected against its new siblings and versioned. The review's finding on family consistency: dct:publisher was the placeholder 'N.N.'; the ISC text names no steward, so the predicate is left out rather than filled with a placeholder. The disclaimer paragraph is split at 'IN NO EVENT SHALL THE AUTHOR BE LIABLE', the split the new ISC-form records use.

Settled in version 2 (1)

  • settled odrl:prohibition

    dalicc:ChangeLicense is prohibited although the text imposes no condition beyond the notice. 0BSD, whose text differs only by that notice, does not prohibit it. Same family-level decision as in the BSD records.

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 content review of 2026-09-15 added 1 identification detail and 1 permission, changed 3 permissions and recorded the review state. Later changes brought it in line with its family and its text in the verification of 2026-09-15, permitted relicensing with the notice as a duty, 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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    21 changes

    • 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 permission dalicc:chargeLicenseFee

      Review finding The grant is "for any purpose with or without fee". dalicc:chargeDistributionFee was already permitted; added dalicc:chargeLicenseFee so that the record says the same as 0BSD, whose text is this text minus the notice condition.

    • changed permission odrl:derive with duties [cc:Attribution, cc:Notice]

      was permission odrl:derive with duties [cc:Attribution]

      Review finding The condition reads: "provided that the above copyright notice and this permission notice appear in all copies". The record required cc:Attribution only. Added cc:Notice to the distribute, modify and derive duties, matching MIT and the BSD records.

    • changed permission odrl:distribute with duties [cc:Attribution, cc:Notice]

      was permission odrl:distribute with duties [cc:Attribution]

      Review finding The condition reads: "provided that the above copyright notice and this permission notice appear in all copies". The record required cc:Attribution only. Added cc:Notice to the distribute, modify and derive duties, matching MIT and the BSD records.

    • changed permission odrl:modify with duties [cc:Attribution, cc:Notice]

      was permission odrl:modify with duties [cc:Attribution]

      Review finding The condition reads: "provided that the above copyright notice and this permission notice appear in all copies". The record required cc:Attribution only. Added cc:Notice to the distribute, modify and derive duties, matching MIT and the BSD records.

    • added spdx:licenseId "ISC"

      Review finding Added the SPDX list id ISC.

    • added dalicc:LiabilityLimitation "IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE."

      Manual edit The review's finding on family consistency: dct:publisher was the placeholder 'N.N.'; the ISC text names no steward, so the predicate is left out rather than filled with a placeholder. The disclaimer paragraph is split at 'IN NO EVENT SHALL THE AUTHOR BE LIABLE', the split the new ISC-form records use.

    • changed dalicc:WarrantyDisclaimer "THE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS."

      was dalicc:WarrantyDisclaimer "THE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE."

      Manual edit The review's finding on family consistency: dct:publisher was the placeholder 'N.N.'; the ISC text names no steward, so the predicate is left out rather than filled with a placeholder. The disclaimer paragraph is split at 'IN NO EVENT SHALL THE AUTHOR BE LIABLE', the split the new ISC-form records use.

    • removed dct:publisher "N.N."

      Manual edit The review's finding on family consistency: dct:publisher was the placeholder 'N.N.'; the ISC text names no steward, so the predicate is left out rather than filled with a placeholder. The disclaimer paragraph is split at 'IN NO EVENT SHALL THE AUTHOR BE LIABLE', the split the new ISC-form records use.

    • added permission dalicc:ChangeLicense with duties [dalicc:compliantLicense]

      Manual edit Permit relicensing on permissive licences; the notice clause is a duty, not a bar. Library convention 15: a licence that asks for no reciprocity and no source code asks only that the notice travels with the copy, which is a duty on the acts it governs and not a bar on putting the copy under other terms. dalicc:ChangeLicense is therefore a permission here, and the prohibition the record carried before is removed. The text reads: "Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies." The permission carries the dalicc:compliantLicense duty, as Apache-2.0 does, because the notice has to survive the relicensing.

    • removed prohibition dalicc:ChangeLicense

      Manual edit Permit relicensing on permissive licences; the notice clause is a duty, not a bar. Library convention 15: a licence that asks for no reciprocity and no source code asks only that the notice travels with the copy, which is a duty on the acts it governs and not a bar on putting the copy under other terms. dalicc:ChangeLicense is therefore a permission here, and the prohibition the record carried before is removed. The text reads: "Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies." The permission carries the dalicc:compliantLicense duty, as Apache-2.0 does, because the notice has to survive the relicensing.

    • changed permission dalicc:ChangeLicense with duties [dalicc:compliantLicense]

      was permission dalicc:ChangeLicense with duties [dalicc:compliantLicense]

      Manual edit The statement is marked as a library convention, family rule 15: Permissive records permit relicensing: the text does not state it in as many words. Its duty dalicc:compliantLicense is marked as a library convention, family rule 15: Permissive records permit relicensing.

    • changed permission dalicc:chargeDistributionFee

      was permission dalicc:chargeDistributionFee

      Manual edit The statement now quotes the sentence of the licence text it rests on: "Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies."

    • changed permission odrl:derive with duties [cc:Attribution, cc:Notice]

      was permission odrl:derive with duties [cc:Attribution, cc:Notice]

      Manual edit Its duty cc:Attribution quotes "Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies."

    • changed permission odrl:distribute with duties [cc:Attribution, cc:Notice]

      was permission odrl:distribute with duties [cc:Attribution, cc:Notice]

      Manual edit Its duty cc:Attribution quotes "Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies."

    • changed permission odrl:modify with duties [cc:Attribution, cc:Notice]

      was permission odrl:modify with duties [cc:Attribution, cc:Notice]

      Manual edit Its duty cc:Attribution quotes "Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies."

    • 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 permission odrl:derive with duties [cc:Attribution, cc:Notice]

      was permission odrl:derive with duties [cc:Attribution, cc:Notice]

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

    • changed permission odrl:distribute with duties [cc:Attribution, cc:Notice]

      was permission odrl:distribute with duties [cc:Attribution, cc:Notice]

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

    • changed permission odrl:modify with duties [cc:Attribution, cc:Notice]

      was permission odrl:modify with duties [cc:Attribution, cc:Notice]

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

  2. 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.