There are different versions of Microsoft Office for Mac OS X, Windows, Linux, iPad, iPhone, iPod Touch, Blackberry, and Android. Microsoft has extended its product lines to include various tools for content management, collaboration, electronic mailing, task management, distribution, and other business related tasks. It is widely used for document storage, preparation and organization as well as for creating word processing, presentations, database, web page designs, desktop publishing and more. Microsoft Office 2021 is one of the most widely used office applications all over the world.