[zeromq-dev] Licence

[Pieter Hintjens]

On Fri, Sep 7, 2012 at 10:41 AM, Bennie Kloosteman <bklooste at gmail.com> wrote:

> I see the 15/ZMTP spec is covered by the GPL licence ?
>
> Is the software itself covered by GPL 3  or the lesser GPL ?  Since GPL
> means if I link it to any software I must release the source ...

It does explain this on the right side of the page:

"Note on use of the GPL: we use this license to cover the
specification text itself, not implementations. You can license your
own code under any license you wish. If you make derived versions of
this specification, you must share them under the GPL. The goal of
this is to prevent private extensions of our specifications."

-Pieter