Xquared is copyrighted free software by Alan Kang . You can redistribute and/or modify it under the terms of the LGPL. (http://www.gnu.org/licenses/lgpl.html) While Xquared itself has no dependencies with external libraries, you need following libraries in order to build Xquared from source code: * jsspec * Homepage: http://jania.pe.kr/aw/moin.cgi/JSSpec * License: http://www.gnu.org/licenses/lgpl.html * yui-compressor * Homepage: http://developer.yahoo.com/yui/compressor/ * License: http://developer.yahoo.com/yui/license.html * selenium-core * Homepage: http://selenium-core.openqa.org/ * License: http://selenium-core.openqa.org/license.jsp * jsdoc_toolkit * Homepage: http://code.google.com/p/jsdoc-toolkit/ * License: http://www.opensource.org/licenses/mit-license.php