Overleaf - The online platform for scientific writing. Overleaf is free: start writing now with one click. No sign-up required. Great on your iPad.
Microsoft 365 - Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online
TeXstudio - TeXstudio is an integrated environment for writing LaTeX documents.
Apache OpenOffice - Apache OpenOffice is an open source, office document productivity suite.
LyX - LyX is a document processor.
SSuite Office - SSuite Office is called to be one of the most accomplished software developers for both beginners and professionals alike.