RE: [Help-gsl] Permissions for using GSL in my own software

[Earl, Joseph]

I have a question on GSL GPL, in the FAQ it states:

1) Does the GPL allow me to charge a fee for downloading the program from my 
site?

    Yes. You can charge any fee you wish for distributing a copy of the 
program. If you distribute binaries by download, you must provide "equivalent 
access" to download the source-therefore, the fee to download source may not be 
greater than the fee to download the binary.

2) Does the GPL allow me to sell copies of the program for money?

    Yes, the GPL allows everyone to do this. The right to sell copies is part 
of the definition of free software. Except in one special situation, there is 
no limit on what price you can charge. (The one exception is the required 
written offer to provide source code that must accompany binary-only release.)


So the following should be allowed?

- Charge $X for an application binary and required written offer to provide the 
source code for free
- and charge anything up to $X for the source code only (for people who do not 
purchase the binary)

Regards,
Joseph Earl

-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Brian Gough
Sent: 22 January 2010 15:30
To: Vicent
Cc: address@hidden
Subject: Re: [Help-gsl] Permissions for using GSL in my own software

At Sat, 16 Jan 2010 14:26:03 +0100,
Vicent wrote:
> But if I develop a software of my own and I register or patent it, am I
> allowed to use GSL inside it???
> 
> Sorry if this is a too easy question. Anyway, I would appreciate any
> feedback.

Information about the license: http://www.gnu.org/licenses/gpl-faq.html

See also the brief description at http://www.gnu.org/software/gsl/
under "Licensing"


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