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Re: Licensing


  • From: Chris Travers <chris(at)travelamericas(dot)com>
  • To: Bruno Wolff III <bruno(at)wolff(dot)to>, PostgreSQL advocacy <pgsql-advocacy(at)postgresql(dot)org>
  • Subject: Re: Licensing
  • Date: Sat, 05 Mar 2005 16:55:29 -0800
  • Message-id: <422A5501.1020202@travelamericas.com> <text/plain>




No really. The software is GPL and you can use it as you would any GPL
software. However MySQL threatans to take people to court if they use
the software commercially. They may or may not win, but this gets companies
to pay MySQL license fees rather than pay to go to court.

In theory if your application isn't tied tightly to MySQL you should be
able to win a lawsuit. But the first couple of companies that did this
will probably end up paying more in court costs than license fees.
This is an extremely important point IMHO (IANAL). My company releases most of the projects we do under the GPL (unlike MySQL we don't require that changes get assigned to us). One of the thing that makes the GPL very powerful is that the balance of risk in litigating favors just buying the licenses.

Like many, I think that the GPL would largely stand up in court but some of the ambiguity inherent in the question of what exactly is a derivative work will slowly get hammered out by the courts. For example, I am not convinced that linking is sufficient to consider a work derivative. But until people have an incentive (on the balance) to ask the court to clarify this question, I suspect that the term will largely mean whatever the licensor says it means.

This means that obtaining GPL'd software from a single commercial entity is fairly risky because one is held captive to the possibility of litigation-based extortion.

Best Wishes,
Chris Travers
Metatron Technology Consulting



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