Which DUAL Licence should I choose.

[Thomas Schneider]

Hello John,
    let me first thank you for your insight's.

Frankly speaking, I'm in the EDP (nowadays called IT) since the early 
sixties, and have
autored a couple of programs on Geisco's worldwide MARK III service 
decades ago.

They did have a so-called royalty fee: I got, for instance, 20% as an 
author for usage of my soft.

I never did actually understand what the original software AUTHOR's are 
LIVING from
(when they don't have a second job) in the OSF community (unless 
*sponsored* by a big
name (with a lot of money...).

I will now still collect all hint's I'm getting for a while, and then 
come up with a decision.

Thanks again,

Thomas Schneider.
=======================================================================.
Am 29.07.2011 23:12, schrieb John Cowan:
> Thomas Schneider scripsit:
>
>> I do have some partner's around the world who might be interested to
>> CONTRIBUTE to my software. In order to be able to do so, I would like
>> to OPEN SOURCE the Software on KENAI, but SELL it !
> Open-source licenses don't prevent you from selling software: in fact,
> they encourage it.  Which means that anyone can sell your software, not
> just you.
>
> Your advantage, however, is that you know the software much better than
> any competitor would.  So if a user wants a change in the software,
> you can offer your services in customizing it for money.  It's up
> to you and your customers whether you add the customizations to the
> open-source version or not.  Anyone else could do the same thing, but it
> would probably be harder for them and slower to get done, so you have a
> commercial advantage.
>
> Some programmers do this systematically by releasing version N of the
> software only under a proprietary license, while versions N - 1, N
> = 2, etc. are all open source.
>


-- 
Thomas Schneider (www.thsitc.com)