The MirOS Licence

Also known as MirOS, The MirOS Licence.

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/MirOS

Permissions

Change license by library convention
Duties
- Use a compliant license by library convention
Charge distribution fee from the text
Commercial use from the text
Derivative works from the text
Derive from the text
Duties
- Attribution from the text
- Notice from the text
Display from the text
Distribute from the text
Duties
- Attribution from the text
- Notice from the text
Modified works from the text
Modify from the text
Duties
- Attribution from the text
- Notice from the text
Present from the text
Reproduce from the text
Sublicense from the text

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)

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

This work is provided "AS IS" and WITHOUT WARRANTY of any kind, to the utmost extent permitted by applicable law, neither express nor implied; without malicious intent or gross negligence.

Limitation of liability

In no event may a licensor, author or contributor be held liable for indirect, direct, other damage, loss, or other issues arising in any way out of dealing in the work, even if advised of the possibility of such damage or existence of a defect, except proven that it results out of said person's immediate fault when using the work as intended.

Info

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

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/MirOS",
  "license-title": "The MirOS Licence",
  "spdx-id": "MirOS",
  "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/MirOS> .

RDF, JSON-LD

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

HTML attribution

<p>This work is licensed under <a href="https://dalicc.net/licenselibrary/MirOS" rel="license">The MirOS Licence</a>.</p>

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

Badge

Markdown

[![License: The MirOS Licence](https://dalicc.net/license-library/MirOS/badge.svg)](https://dalicc.net/license-library/MirOS)

HTML

<a href="https://dalicc.net/license-library/MirOS"><img src="https://dalicc.net/license-library/MirOS/badge.svg" alt="License: The MirOS Licence"></a>

Review

Written from the license text by: Giray Havur
Written on: 2026-09-15
Second review: not yet done
Record changed since this review: yes (version 2, 2026-09-24)
Findings: 9 recorded, 6 applied to the record, 0 proposed

The record models the MirOS licence, an MIT-form grant that puts the condition first: the terms, the disclaimer and all copyright notices must be retained or reproduced in an accompanying document, and then the work may be dealt in without restriction. Sublicensing is named in the grant, so dalicc:sublicense is permitted.

9 findings

major Rubric 3 odrl:permission applied

The grant reads: "permission is granted to deal in this work without restriction, including unlimited rights to use, publicly perform, distribute, sell, modify, merge, give away, or sublicence." The record permits reproduce, distribute, modify, derive, display, present, sublicense, commercial use, derivative works and modified works; publicly perform supports odrl:present and odrl:display, and sell supports dalicc:chargeDistributionFee. The text does not carry the MIT clause about persons to whom the work is furnished, so there is no odrl:grantUse.
major Rubric 5 odrl:duty applied

The condition reads: "Provided that these terms and disclaimer and all copyright notices are retained or reproduced in an accompanying document". cc:Attribution and cc:Notice on distribute, modify and derive.
major Rubric 4 odrl:prohibition applied

dalicc:ChangeLicense is prohibited because the text requires the license itself to travel with every copy, which is the reading IscLicense and BSD-3-Clause take of the same clause. The MIT record does not carry the prohibition although its text has the same requirement, so the library is not uniform here. (Corrected on 2026-09-15 by the verification pass: see the rubric 3 finding on relicensing below.)
minor Rubric 6 dalicc:WarrantyDisclaimer applied

The disclaimer paragraph is split at the liability sentence. The liability clause is unusual in that it keeps the licensor liable for immediate fault when the work is used as intended, which is quoted and not paraphrased.
info Rubric 7 cc:jurisdiction none

The text names no legal system and no term, so cc:jurisdiction is dalicc:worldwide and dalicc:validityType is dalicc:perpetual.
info Rubric 2 odrl:target applied

One odrl:AssetCollection of dct:type dcmitype:Software, following MIT. The text says work throughout but is an operating system license.
info Rubric 9 record none

The consistency check with the axioms of dg_default returned no conflicts.
info Rubric 10 record none

The review group notes expected a condition on distributing modified versions. The fetched text has none: the only condition is the retention of the terms, the disclaimer and the copyright notices, which applies to every copy. The record follows the text.
major Rubric 3 odrl:permission applied

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 earlier reading wrote is removed. The text reads: "Provided that these terms and disclaimer and all copyright notices are retained or reproduced in an accompanying document, permission is granted to deal in this work without restriction, including unlimited rights to use, publicly perform, distribute, sell, modify, merge, give away, or sublicence." The permission carries the dalicc:compliantLicense duty, as Apache-2.0 does, because the notice has to survive the relicensing.

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 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.

View version 2 JSON-LD Turtle RDF/XML
9 changes
- 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 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 "Provided that these terms and disclaimer and all copyright notices are retained or reproduced in an accompanying document, permission is granted to deal in this work without restriction, including unlimited rights to use, publicly perform, distribute, sell, modify, merge, give away, or sublicence."
- 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 "Provided that these terms and disclaimer and all copyright notices are retained or reproduced in an accompanying document, permission is granted to deal in this work without restriction, including unlimited rights to use, publicly perform, distribute, sell, modify, merge, give away, or sublicence."
- 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 "Provided that these terms and disclaimer and all copyright notices are retained or reproduced in an accompanying document, permission is granted to deal in this work without restriction, including unlimited rights to use, publicly perform, distribute, sell, modify, merge, give away, or sublicence."
- changed permission odrl:present
  
  was permission odrl:present
  
  Manual edit The statement now quotes the sentence of the licence text it rests on: "Provided that these terms and disclaimer and all copyright notices are retained or reproduced in an accompanying document, permission is granted to deal in this work without restriction, including unlimited rights to use, publicly perform, distribute, sell, modify, merge, give away, or sublicence."
- 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.
Version 1

Created from the license text on 2026-09-15 (Permissive: MIT, ISC and BSD-like).

View version 1 JSON-LD Turtle RDF/XML

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.