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JQuery and JCrop
PHP Image Editor uses Stefan Petre´s ColorPicker. Which is free and can be found at: http://www.eyecon.ro/colorpicker/
All fonts that are used is free and can be found at http://www.fontsquirrel.com/
None of the fonts are made by PHP Image Editor.
The Nobile fonts are licensed with "SIL Open Font License".
The Sansations fonts are licensed with "Bernd Montag License".