Hi Stefan,

On Thu, 07. Jan 2021 at 12:55:22 +0000, Stefan Steiger wrote:
> Also, if you use commercial software, 

you probably meant to say proprietary software - as you correctly said free
software is not required to be free of charge and hence can be commercial too.

> As with plugins:
> As long as they are NOT distributed with the software BY DEFAULT, they don’t
> necessarily have to abide by the GPL.

If they are derived from GPL software they also have to be GPL - and most QGIS
plugins have no use without QGIS.


> As long as you only use it internally (e.g. on a WebServer), you don’t have
> to abide by the terms of the GPL (the
> Affero<https://en.wikipedia.org/wiki/Affero_General_Public_License>/Application-Service-Provider
> loophole).

You always have to abide the license terms - just if you don't redistribute,
many restrictions don't apply.


Jürgen

-- 
Jürgen E. Fischer           norBIT GmbH             Tel. +49-4931-918175-31
Dipl.-Inf. (FH)             Rheinstraße 13          Fax. +49-4931-918175-50
Software Engineer           D-26506 Norden            https://www.norbit.de
QGIS release manager (PSC)  Germany                    IRC: jef on FreeNode

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