Red Hat Inc.(Red Hat) is engaged in providing open source software solutions to the enterprise, including its core enterprise operating system platform, Red Hat Enterprise Linux, its enterprise middleware platform, JBoss Enterprise Middleware, its virtualization solutions and other Red Hat enterprise technologies. The Company employs an open source software development and licensing model that uses the collaborative input of an international community of contributors to develop and enhance software. The collectively developed software is distributed under open source licenses, such as the GNU General Public License and GNU Lesser General Public License, permitting access to the human-readable software source code. In March 2008, the Company acquired Amentra, Inc., and in September 2008, it acquired Qumranet, Inc. Its wholly owned subsidiary is Red Hat Professional Consulting, Inc.