This program and its source is distributed under the Lesser General Public License. http://www.gnu.org/licenses/lgpl.html When you modify the library, you have to publish your modified version for free under LGPL license. Author and Copyright owner: Stefan Frings stefan@stefanfrings.de http://www.stefanfrings.de The qtservice module had been originally published by Trolltech under the LGPL license as well, but is now re-published by Digia under the less restrictive BSD License.