Microsoft Office is a proprietary commercial  office suite of inter-related desktop applications,  servers and services for the Microsoft Windows  and Mac OS X operating systems, introduced by  Microsoft in 1989. Initially a marketing term for a  bundled set of applications, the first version of  Office contained Microsoft Word, Microsoft  Excel, and Microsoft PowerPoint. Over the  years, Office applications have grown  substantially closer with shared features such as a common spell checker, OLE data integration  and Microsoft Visual Basic for Applications  scripting language. Microsoft also positions  Office as a development platform for line-of-  business software under the Office Business  Applications brand. According to Forrester  Research, as of June 2009, some version of  Microsoft Office is used in 80% of enterprises,  with 64% of enterprises using Office 200 Microsoft Office 2014 Microsoft Windows 8