ManageEngine M365 Manager Plus - Auditing, monitoring and reporting tool for Office 365
Microsoft 365 - Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online
Secure Suite - Cloud Email service
Apache OpenOffice - Apache OpenOffice is an open source, office document productivity suite.
Adaxes - Automate active directory
SSuite Office - SSuite Office is called to be one of the most accomplished software developers for both beginners and professionals alike.