Microsoft Office
Microsoft Office is a complete suite solution for managing different sorts of documents, such as word files, presentations, and spreadsheets. It is one of the most widely-used productivity suites adopted by individuals as well as small and large organizations.
Microsoft Office is available as both standalone installers with a one-time purchase and can be subscribed to through Office 365.
This suite consists of but is not limited to, Word, Excel, PowerPoint, and Outlook. Each of these has its own purpose and support files in different formats.