Pixelitor as a whole is licensed under the GNU GPL version 3:
http://www.gnu.org/licenses/gpl-3.0.html

Various third party libraries are licensed under GPL-compatible licenses:

- The JHLabs.com image filters library (written by Jerry Huxtable)(http://www.jhlabs.com/ and also available as an open-source project at https://pixels.dev.java.net/) uses the Apache 2.0 license: 
http://www.apache.org/licenses/LICENSE-2.0

- SwingX (https://swingx.dev.java.net/) is licensed under the GNU Lesser General Public License: 
http://www.gnu.org/copyleft/lesser.html

- The contents of the com.bric package (written by Jeremy Wood) are from https://javagraphics.dev.java.net/ and are distributed under the Modified BSD license. See License.html in the com/bric package. 

- Classes in the pd package are in the public domain:
	CannyEdgeDetector written by Tom Gibara, see http://www.tomgibara.com/computer-vision/canny-edge-detector

Also see the individual source file headers. 



