Vovida Software License v1.0

Also known as VSL-1.0, Vovida Software License v1.0.

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/VSL-1.0

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
- Rename 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
- Rename from the text
Present from the text
Reproduce from the text

Prohibitions

Promote 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.

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

Clauses

Warranty disclaimer

THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT ARE DISCLAIMED.

Limitation of liability

IN NO EVENT SHALL VOVIDA NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DAMAGES IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 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 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Additional clauses

This license applies to all software incorporated in the "Vovida Open Communication Application Library" except for those portions incorporating third party software specifically identified as being licensed under separate license. 4. Products derived from this software may not be called "VOCAL", nor may "VOCAL" appear in their name, without prior written permission.

Info

Target asset types: Software
Region / jurisdiction: Worldwide
Validity: Perpetual
Source: https://spdx.org/licenses/VSL-1.0.html
Legal code: https://opensource.org/license/VSL-1.0
This description is published under: Creative Commons Attribution 4.0 International
Publisher: Vovida Networks, Inc.
SPDX identifier: VSL-1.0 on the SPDX license list
DALICC identifier: VSL-1.0

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/VSL-1.0",
  "license-title": "Vovida Software License v1.0",
  "spdx-id": "VSL-1.0",
  "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/VSL-1.0> .

RDF, JSON-LD

{
  "@context": {
    "cc": "http://creativecommons.org/ns#"
  },
  "@id": "https://example.org/my-work",
  "cc:license": {
    "@id": "https://dalicc.net/licenselibrary/VSL-1.0"
  }
}

HTML attribution

<p>This work is licensed under <a href="https://dalicc.net/licenselibrary/VSL-1.0" rel="license">Vovida Software License v1.0</a>.</p>

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

Badge

Markdown

[![License: Vovida Software License v1.0](https://dalicc.net/license-library/VSL-1.0/badge.svg)](https://dalicc.net/license-library/VSL-1.0)

HTML

<a href="https://dalicc.net/license-library/VSL-1.0"><img src="https://dalicc.net/license-library/VSL-1.0/badge.svg" alt="License: Vovida Software License v1.0"></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: 11 recorded, 8 applied to the record, 0 proposed

The record models the Vovida Software License version 1.0, a four-condition BSD license. Conditions one and two are the usual notice conditions, condition three is the endorsement bar and condition four requires a derived product to carry a different name, which is modelled as a dalicc:rename duty on modify and derive. The liability clause is the one clause in this review group that names a money figure.

11 findings

major Rubric 3 odrl:permission applied

"Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met". The permissive core, as on BSD-3-Clause.
major Rubric 5 odrl:duty applied

The conditions are the three BSD conditions: the copyright notice, the list of conditions and the disclaimer must be retained in source redistributions and reproduced in binary redistributions, so cc:Attribution and cc:Notice are duties on distribute, modify and derive.
major Rubric 5 odrl:duty applied

Condition 4 reads: "Products derived from this software may not be called "VOCAL", nor may "VOCAL" appear in their name, without prior written permission." dalicc:rename is therefore a duty on modify and derive: a changed work has to be given a different name. This is the same reading BSD-4-Clause style naming conditions get elsewhere in the library.
major Rubric 4 odrl:prohibition applied

Condition 3 reads: "The names "VOCAL", "Vovida Open Communication Application Library", and "Vovida Open Communication Application Library (VOCAL)" must not be used to endorse or promote products derived from this software without prior written permission." That is dalicc:promote as a prohibition. 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 of this review group: see the rubric 3 finding on relicensing below.)
minor Rubric 6 dalicc:LiabilityLimitation applied

The liability clause caps damages at a figure: in no event shall the licensor be liable for any damages in excess of $1,000. It is quoted verbatim, including the figure, because the cap is the substance of the clause.
minor Rubric 6 dalicc:additionalClauses applied

Two sentences are quoted: the scope sentence, which excludes third party software incorporated in the library and licensed separately, and condition 4, whose detail the dalicc:rename duty does not carry.
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 BSD-3-Clause. The text licenses software in source and binary form.
info Rubric 9 record none

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

Against BSD-3-Clause the difference is the naming condition, which the library expresses as a dalicc:rename duty, and the damages cap in the liability clause.
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: "Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer." 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 and named the license the record itself is published under.

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3 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 prohibition dalicc:promote
  
  was prohibition dalicc:promote
  
  Manual edit The statement now quotes the sentence of the licence text it rests on: "The names "VOCAL", "Vovida Open Communication Application Library", and "Vovida Open Communication Application Library (VOCAL)" must not be used to endorse or promote products derived from this software without prior written permission."
- 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

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.