[Trisquel-users] Re : How to recognize non-free javascript

[magicbanana]

Terrible example: Qt is not, and has never been, distributed under a  
permissive license. Today, it is distributed under the GNU LGPL 2.1 (before  
that, between 2000 and 2009, the GNU GPL was used) and, for evil proprietary  
software, under the Qt Commercial License. The former is copylefted (any  
redistribution of the library must be under the same GNU LGPL 2.1 license).  
The latter is proprietary.