A dual license system for code libraries?

2017-02-25 Thread Agner Fog
Hi, I have a problem with several open source projects. Neither GPL nor LGPL license seems to be appropriate. One such project is my C++ vector class library (http://agner.org/optimize/#vectorclass ) Right now, I am using a dual license system. The library is published under GPL, following the

Re: A dual license system for code libraries?

2017-02-25 Thread Agner Fog
On 25-02-2017 14:44, Paul Boddie wrote: ...this is almost like asking for business advice Don't get me wrong. It is not my goal to make money. My goal is to make free software libraries. You have to remember that Free Software is all about end-user empowerment. If a user gets a binary that g

Re: A dual license system for code libraries?

2017-02-25 Thread Agner Fog
On 25-02-2017 18:49, Paul Boddie wrote: On Saturday 25. February 2017 15.43.54 you wrote: Don't get me wrong. It is not my goal to make money. My goal is to make free software libraries. But it is still like asking for business advice, because many of the issues are exactly like structuring the

Re: A dual license system for code libraries?

2017-02-26 Thread Agner Fog
On 26-02-2017 10:50, Carsten Agger wrote: But maybe Agner might consider using the Mozilla Public License 2.0? It differs from the GPL and LGPL in that ... So changes to Agner's library would remain free software, but people can use it to build proprietary application which they supply in o

Re: A dual license system for code libraries?

2017-02-26 Thread Agner Fog
On 26-02-2017 19:48, Carsten Agger wrote: If our business models never involve releasing under a proprietary license, we're not contributing to the proprietary software economy, and that's that. Acturally, we are contributing indirectly if an open source library is used in proprietary softwa

Re: A dual license system for code libraries?

2017-02-27 Thread Agner Fog
On 27-02-2017 11:06, Mirko Boehm (FSFE) wrote: * You will need permission/license from the other contributors to sell proprietary licenses. * You need a scheme that fairly distributes the licensing revenue so that it motivates people to contribute. You could pay out shares of the

Re: A dual license system for code libraries?

2017-02-28 Thread Agner Fog
On 27-02-2017 15:44, Paul Boddie wrote: What would be interesting to see is an organisation that can invoice people for spending money on Free Software which remains Free Software. Yes, exactly. An organization to sell license exceptions to GPL software. Do you think the FSF will endorse such a

Re: A dual license system for code libraries?

2017-02-28 Thread Agner Fog
On 28-02-2017 13:22, Carsten Agger wrote: The ultimate goal of the free software movement is that *all* software should provide its users the four freedoms. Proprietary software should become a thing of the past. This is a lot to do with the wish for a free society - Stallman's analysis of th