<span style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">Hi,</span><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">
<br></div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">I see Twisted is an open source software under MIT license on their web site. (<a href="http://twistedmatrix.com/trac/" style="color:rgb(17,85,204)" target="_blank">http://twistedmatrix.com/trac/</a>)</div>
<div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">And I see Twisted is <span style="color:rgb(72,72,72);font-size:12px;font-family:'Lucida Grande',verdana,arial,helvetica,sans-serif">under a proprietary license (non GPL) on SipSimpleSDK web site. (</span><font color="#484848" face="Lucida Grande, verdana, arial, helvetica, sans-serif"><span style="font-size:12px"><a href="http://sipsimpleclient.ag-projects.com/projects/sipsimpleclient/wiki/LICENSE" style="color:rgb(17,85,204)" target="_blank">http://sipsimpleclient.ag-projects.com/projects/sipsimpleclient/wiki/LICENSE</a></span></font><span style="color:rgb(72,72,72);font-size:12px;font-family:'Lucida Grande',verdana,arial,helvetica,sans-serif">)</span></div>
<div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">I'm confused here :)</div>