After Nokia purchsed Trolltech last year, doubts arose about how Nokia would handle the dual licensing model of Qt, the advanced cross-platform toolkit which lies at the base of the KDE Free software desktop. As it turns out, these doubts were unfounded, as Nokia today announced it’s going to add the LGPL to Qt’s licensing model, starting with Qt 4.5.
The press release explains the move to add the LGPL as such:
The move to LGPL licensing will provide open source and commercial developers with more permissive licensing than GPL and so increase flexibility for developers. In addition, Qt source code repositories will be made publicly available and will encourage contributions from desktop and embedded developer communities. With these changes, developers will be able to actively drive the evolution of the Qt framework.
The licensing model of previous versions of Qt will remain unchanged, and the commercial licensing option will remain available. The service offerings for Qt will be broadened so that all Qt development projects can benefit from this support, regardless of the license chosen. The vice president of Nokia, Qt Software Sebastian NystrÃ¶m, and Trolltech Co-Founder Eirik Chambe-Eng explain what adding the LGPL means for Qt:
Qt 4.5 is slated for a March 2009 release.