[QGIS-Developer] Questions about QGIS plugin sales

[Tim Sutton]

Olá Jeferson 

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Regards 

Tim



> On 13 May 2021, at 21:02, jeferson da Silva <jeferson77722 at gmail.com> wrote:
> 
> 
> Thanks for your help,
> 
> I understand about the GPL v2 + license from QGIS. Is there any kind of certificate (or attestation) that I may have from QGIS plugin developers or something? Or my company to join QGIS?
> I ask this because some of my clients may ask this question.
> 
> Jeferson da Silva de Jesus: Agricultural technician, majoring in Systems Development Analysis.
> CEO from Trindade Company. 
> WhatsApp: +55 71 99261-9642
> 
>> Em qui., 13 de mai. de 2021 às 16:22, Even Rouault <even.rouault at spatialys.com> escreveu:
>> Jeferson,
>> 
>> yes, you can sell plugins, but you'll have to distribute the source code of it, or make a written offer to have access to it, to your customers under the GPL v2+ license of QGIS (which mean they could also potentially redistribute the source code freely, in all meaning of the word, to anyone else)
>> 
>> See https://www.gnu.org/licenses/gpl-faq.en.html#DoesTheGPLAllowMoney
>> 
>> And also https://lists.osgeo.org/pipermail/discuss/2021-March/039273.html
>> 
>> Even
>> 
>> Le 13/05/2021 à 21:08, jeferson da Silva a écrit :
>>> Hello, 
>>> 
>>> My name is Jeferson and I have a company in Brazil called Trindade Company, which map cities with Drones and recently created a plugin and interfaces for QGIS, for urban taxation, do tax calculations automatically and synchronize with a bank of data. My question is, can I sell these plugins? How can my company be a representative or partner of QGIS?
>>> Attached images of the plugin and interface.
>>> QGIS Version: 3.18.2
>>> 
>>> Jeferson da Silva de Jesus: Agricultural technician, majoring in Systems Development Analysis.
>>> CEO from Trindade Company. 
>>> WhatsApp: +55 71 99261-9642
>>> 
>>> 
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>> -- 
>> http://www.spatialys.com
>> My software is free, but my time generally not.
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