Microsoft is the Global Leader in Computer Operating System Software and Office Productivity Software. 

Operating System :

Windows 10 Home, Windows 10 Pro

Office 2019 Applications :

Office 2019 Home/Student, Office 2019 Home/Business, Office 2019 Pro 

Office 365 Cloud Services :

Home Use :

Office 365 Personal, Office 365 Home

Office Use :

Office 365 Business Essentials, Office 365 Business, Office 365 Business Premium