Office on the web is a version of the software that runs within a web browser. Microsoft also maintains mobile apps for Android and iOS. The original, and most widely used version, is the desktop version, available for PCs running the Windows and macOS operating systems.

Office is produced in several versions targeted towards different end-users and computing environments. On July 10, 2012, Softpedia reported that Office was being used by over a billion people worldwide. Microsoft also positions Office as a development platform for line-of-business software under the Office Business Applications brand. Over the years, Office applications have grown substantially closer with shared features such as a common spell checker, OLE data integration and Visual Basic for Applications scripting language. Initially a marketing term for an office suite (bundled set of productivity applications), the first version of Office contained Microsoft Word, Microsoft Excel, and Microsoft PowerPoint. It was first announced by Bill Gates on August 1, 1988, at COMDEX in Las Vegas. Microsoft Office, or simply Office, is a family of client software, server software, and services developed by Microsoft.

Others: Freeware, with shareware features.

Windows 10 Mobile and Windows Phone: Built-in.

Proofing only (11): Hausa, Igbo, isiXhosa, isiZulu, Kinyarwanda, Pashto, Romansh, Sesotho sa Leboa, Setswana, Wolof, Yoruba.

Partial (48): Afrikaans, Albanian, Amharic, Armenian, Assamese, Azerbaijani (Latin), Bangla (Bangladesh), Bangla (Bengali India), Belarusian, Bosnian (Latin), Dari, Filipino, Georgian, Gujarati, Icelandic, Irish, Kannada, Khmer, KiSwahili, Konkani, Kyrgyz, Luxembourgish, Macedonian, Malayalam, Maltese, Maori, Marathi, Mongolian (Cyrillic), Nepali, Norwegian Nynorsk, Odia, Persian (Farsi), Punjabi (Gurmukhi), Quechua, Scottish Gaelic, Serbian (Cyrillic, Bosnia & Herzegovina), Serbian (Cyrillic, Serbia), Sindhi (Arabic), Sinhala, Tamil, Tatar (Cyrillic), Telugu, Turkmen (Latin), Urdu, Uyghur, Uzbek (Latin), Valencian, Welsh.

Full (43): English, Arabic, Basque, Bulgarian, Catalan, Chinese (Simplified), Chinese (Traditional), Croatian, Czech, Danish, Dutch, Estonian, Finnish, French, Galician, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kazakh, Korean, Latvian, Lithuanian, Malay (Latin), Norwegian Bokmål, Polish, Portuguese (Brazil), Portuguese (Portugal), Romanian, Russian, Serbian (Latin, Serbia), Slovak, Slovenian, Spanish, Swedish, Thai, Turkish, Ukrainian, Vietnamese.

Microsoft office for 4 computers