Tapas, Do not think to easy about this... think twice... :) I'm not an expert in this subject, but... It depends on how your application 'links to' / uses PJSIP. There seems to be a "grey" area with respect to dynamically loading GPL components (dll's). But if you statically link to a PJSIP library, then you can definitely be _forced_ to release your application code. There have already be some court rulings (recently one in Germany against D-Link) and all those kind of rulings resulted in favor of GPL: the companies were forced to release their code. Cisco also failed in this with their cheaper series of routers (forgot the name.. and yes... they were forced too to release to source code). With regards, EiSl On Wed, Aug 1, 2012 at 9:01 AM, <pjsip-request at lists.pjsip.org> wrote: > > From: tapas <tapascst@xxxxxxxxx> > To: pjsip at lists.pjsip.org > Cc: > Date: Wed, 1 Aug 2012 12:30:57 +0530 > Subject: I want to use PJSIP library for commercial use case > Hi, > > I want to use PJSIP library as part of my commercial program. I will > release any modification to pjsip library as open source. But I will not > release my application source code. > > I have gone through these lines in pjsip licensing faq: > http://trac.pjsip.org/repos/wiki/FAQ#licensing > " > > *Using the GNU GPL will require that all the ?released improved versions<http://www.gnu.org/philosophy/pragmatic.html>be free software. This means you can avoid the risk of having to compete > with a proprietary modified version of your own work.* > > We don't want people to take PJSIP, mess it up (erm, improve it), and keep > the improvements as proprietary code. On the contrary, we want everybody to > enjoy PJSIP and all its improvements, and the only way to make sure of this > is by releasing PJSIP as GPL." > > and also this: > > "People often think that using GPL-ed software means that other software > linked with the GPL software have to be GPL too, hence GPL is considered as > viral. *That is not exactly true*. " > > > After going through GPL License Faq, I understood if I release release > PJSIP stack as open source GPL with my Commercial application program then > I don't need to pay any fee for licensing. > > I want to release all improvements made to pjsip (there may be no > improvements at all) as Open Source. But I will not release my application > as open source since it is our own development. > > > Please let me know whether this violates PJSIP GPL license. If this > doesn't violate GPL License then I can release my commercial product > without royalty fee. I am still searching about GPL Licensing issue. > Please guide me on this. > > Regards > > Tapas > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20120801/c8244470/attachment-0001.html>
