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2026

Computer Associates Trusted Open Source License 1.1

Also known as CATOSL-1.1.

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/CATOSL-1.1

Permissions

  • Charge distribution fee from the text 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.

    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.
    • Source code from the text Providing access to the source code of the work with every copy distributed.
  • 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.
  • 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.
    • Source code from the text Providing access to the source code of the work with every copy distributed.
  • Grant use from the text Granting third parties the right to use the 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.
  • No-warranty notice from the text Attaching a notice that the work is provided without any warranty.
  • 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

  • Add statement from the text Not permitted: Add statement. Attaching terms, notices or statements of one's own to the work or to one's modifications when passing it on.
  • Promote from the text Not permitted: Promote. Using the name or trademarks of the licensor or of contributors to endorse or promote a product.

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.

No default rule of that graph reaches this license: it speaks about every act the rules are about.

Clauses

Warranty disclaimer

EXCEPT AS EXPRESSLY SET FORTH IN THIS LICENSE, AND TO THE EXTENT PERMITTED BY LAW, NO CONTRIBUTOR SHALL HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

Info

Target asset types
Software
Region / jurisdiction
Worldwide
Validity
Perpetual
Source
http://opensource.org/licenses/CATOSL-1.1
Legal code
http://opensource.org/licenses/CATOSL-1.1
This description is published under
Creative Commons Attribution 4.0 International
Publisher
Computer Associates International, Inc. (CA)
Attribution name
Computer Associates International, Inc. (CA)
SPDX identifier
CATOSL-1.1 on the SPDX license list
DALICC identifier
CATOSL-1.1

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/CATOSL-1.1",
  "license-title": "Computer Associates Trusted Open Source License 1.1",
  "spdx-id": "CATOSL-1.1",
  "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/CATOSL-1.1> .

RDF, JSON-LD 

{
  "@context": {
    "cc": "http://creativecommons.org/ns#"
  },
  "@id": "https://example.org/my-work",
  "cc:license": {
    "@id": "https://dalicc.net/licenselibrary/CATOSL-1.1"
  }
}

HTML attribution 

<p>This work is licensed under <a href="https://dalicc.net/licenselibrary/CATOSL-1.1" rel="license">Computer Associates Trusted Open Source License 1.1</a>.</p>

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

Badge DALICC badge for Computer Associates Trusted Open Source License 1.1

Markdown 

[![License: Computer Associates Trusted Open Source License 1.1](https://dalicc.net/license-library/CATOSL-1.1/badge.svg)](https://dalicc.net/license-library/CATOSL-1.1)

HTML 

<a href="https://dalicc.net/license-library/CATOSL-1.1"><img src="https://dalicc.net/license-library/CATOSL-1.1/badge.svg" alt="License: Computer Associates Trusted Open Source License 1.1"></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, 2 applied to the record, 2 proposed

The Computer Associates Trusted Open Source License is reciprocal: contributions and modifications are governed by the same license and source must be made available. The record prohibited cc:ShareAlike, reversing that, and the prohibition was removed. The trademark and branding restrictions are correctly modelled.

6 findings

  • major Rubric 5 odrl:prohibition applied

    The license states that the Program and every Contribution are "governed by the terms of this License" and requires source availability for any distribution. Prohibiting cc:ShareAlike asserts the opposite. Removed.

  • major Rubric 5 odrl:duty proposed

    Reciprocity belongs as a license-wide cc:ShareAlike duty. Held back because the record permits odrl:grantUse, which section 2 does grant ("sublicense the Contribution of such Contributor, if any, and such derivative works"), and the dependency graph treats the two as contradictory.

  • info Rubric 4 odrl:prohibition none

    dalicc:promote is prohibited and the section headed "TRADEMARKS AND BRANDING" supports it: the license grants no right to the CA Marks or to any mark of a Contributor.

  • gap Rubric 8 vocabulary none

    The license carries a patent grant, a patent retaliation clause and a branding obligation (the Program must carry the notices posted at the CA URL). Proposed: dalicc:patentGrant, dalicc:patentRetaliationTermination, dalicc:brandingNotice.

  • minor Rubric 5 odrl:duty proposed

    The attribution, notice and source-code duties sit on cc:DerivativeWorks and odrl:distribute while odrl:modify and odrl:derive are bare, a template artefact.

  • minor Rubric 10 record applied

    Standard-license addition of 2026-09-15, decision 9 and 10: the record was corrected against its new siblings and versioned. Library convention 14: the warranty and liability literals carried a padding space inside their quotation marks.

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 removed 1 prohibition and recorded the review state. Later changes brought it in line with its family and its text in the verification of 2026-09-15 and named the license the record itself is published under.

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    5 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.

    • removed prohibition cc:ShareAlike

      Review finding The license states that the Program and every Contribution are "governed by the terms of this License" and requires source availability for any distribution. Prohibiting cc:ShareAlike asserts the opposite. Removed.

    • changed dalicc:WarrantyDisclaimer "EXCEPT AS EXPRESSLY SET FORTH IN THIS LICENSE, AND TO THE EXTENT PERMITTED BY LAW, NO CONTRIBUTOR SHALL HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES."

      was dalicc:WarrantyDisclaimer "EXCEPT AS EXPRESSLY SET FORTH IN THIS LICENSE, AND TO THE EXTENT PERMITTED BY LAW, NO CONTRIBUTOR SHALL HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. "

      Manual edit Library convention 14: the warranty and liability literals carried a padding space inside their quotation marks.

    • 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.

  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.