I don't understand one thing if someone can answer to me. How can a company that develops Joomla extensions release a commercial GPL extension and compel users to keep its code untouched, more specifically "not to remove the backlink to the company" ?! I thought GPL is all about being able to modify the code and freely distribute it to anyone you want, but just keep the original credits to the developers (the ones inside the code and not the visible one! -see backlink-). Is this not against the GPL policy?
I've been developing extensions myself and I would rather ask for a donation, or simply ask for a fee if someone needs support (subscription-based support), but not place a backlink to my website and compel the users to keep it there!
What do you guys think about that? Can anyone from the JED explain that to me?
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On Fri, Jul 6, 2012 at 9:20 AM, Valandis <valan...@gmail.com> wrote:I don't understand one thing if someone can answer to me. How can a company that develops Joomla extensions release a commercial GPL extension and compel users to keep its code untouched, more specifically "not to remove the backlink to the company" ?! I thought GPL is all about being able to modify the code and freely distribute it to anyone you want, but just keep the original credits to the developers (the ones inside the code and not the visible one! -see backlink-). Is this not against the GPL policy?
Yes. It's againts GPL to force to keep that backlink (or limit in any way the extension to be modified).
I've been developing extensions myself and I would rather ask for a donation, or simply ask for a fee if someone needs support (subscription-based support), but not place a backlink to my website and compel the users to keep it there!
What do you guys think about that? Can anyone from the JED explain that to me?
You can ask to keep that backlink (as well as ask for donations or so for removing) but you cannot tell or insinuate that's a legal requisite or something.
Greetings,
Alfonso Moratalla
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Yes. It's againts GPL to force to keep that backlink (or limit in any way the extension to be modified).
You can ask to keep that backlink (as well as ask for donations or so for removing) but you cannot tell or insinuate that's a legal requisite or something.
If you see an extension that tries to do this then please use the report button on their entry on the JED
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IMHO putting backlinks it's OK as well is OK from users to remove then (if they know how, otherwise pay for remove it or leave).
What I don't like is to see lately in JED that some "GPL" extensions are listed when they are rather a lite version of a full version that is on authors site only and (apart that is not free) code is entirely different and it's not even GPL.
To be more accurate, and for extensions released unde Gpl v2 (not version 3), if that extension displays a copyright notice (not a "powered by" or similar) you are not allowed to remove it. And I'm talking about a visible copyright, not one inside source code. This is by virtue of paragraph 2.c of Gpl v2.
So for instance if an extension displays "copyright (c) Somebody 2012" on the front end, and this is a link to the author site, you can disable the link, but not remove the "copyright...." text.
So backlinks is code and can be modified, but visible copyright notices are allowed by gpl and cannot be removed or modified without author consent.
Not saying that's good or anything, I have never done it myself, but that's what the GPL says.
Rgds
There is quite a bit of conjecture in this thread that needs cleared up, but I want to start by reiterating what Sam said - this is a development list, not a JED list. Please post these types of questions in the Forum under the JED Category.
To sum up how it actually works in the JED (and hopefully end this thread so it doesn't clog the dev list anymore)....1) All extensions must be be GPL to be on the JED and developers may not impose additional restrictions to the usage, distribution or modification of the extension.2) All backlinks may be removed from an extension - that's the point of opensource software - you can modify it however you like. The copyright notice from the developer in the *source code* must be left in tact - but otherwise - do as you wish with it.
3) "Lite" versions of extensions are allowed - however, if the "Pro" version does not meet the listing requirements, it cannot be listed. For the "Lite" version to be listed, the "Pro" version on the developer's site must also be GPL (though they can impose additional restrictions to the non-JED-listed version). Additionally, *ALL* information in the JED Listing must be *ONLY* for the exact version listed.If you find a listing that is not in compliance, simply use the "Report" button on the listing as Brian said earlier. We do process all reports, though we do not contact/reply to reporters unless further information is needed from them. Also, not all reports end up with a listing being unpublished.~Matt LipscombJoomla! Extensions Directory
On Friday, July 6, 2012 4:34:35 PM UTC-5, shumisha wrote:Hi,To be more accurate, and for extensions released unde Gpl v2 (not version 3), if that extension displays a copyright notice (not a "powered by" or similar) you are not allowed to remove it. And I'm talking about a visible copyright, not one inside source code. This is by virtue of paragraph 2.c of Gpl v2.
So for instance if an extension displays "copyright (c) Somebody 2012" on the front end, and this is a link to the author site, you can disable the link, but not remove the "copyright...." text.
So backlinks is code and can be modified, but visible copyright notices are allowed by gpl and cannot be removed or modified without author consent.
Not saying that's good or anything, I have never done it myself, but that's what the GPL says.Rgds
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Please keep the Subject wording in your answers
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2) All backlinks may be removed from an extension - that's the point of opensource software - you can modify it however you like. The copyright notice from the developer in the *source code* must be left in tact - but otherwise - do as you wish with it.