Microsoft 365 - Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online
Joeffice - Joeffice is a free and open source office software written in Java.
Apache OpenOffice - Apache OpenOffice is an open source, office document productivity suite.
Siag Office - Siag Office is a free to use office suite designed for the UNIX based operating systems.
SoftMaker Office - SoftMaker Office is one of the most powerful and reliable office suite that is fully compatible with the MS Office Suite.
Microsoft Office 365 - Microsoft Office is an office suite of desktop applications, servers, and services for the Microsoft Windows and OS X operating systems.