Open365
The open source cloud with LibreOffice online - LibreOffice online + Seafile + KDE.
19 Alternatives To Open365
Apache OpenOffice
Apache OpenOffice is an open source, office document productivity suite.
Apple Mail
There’s big news attached.
Apple iWork
iWork is an office suite by Apple.
Claws Mail
Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response
Evolution
Apps/Evolution - GNOME Wiki!
Foxmail
Foxmail is a free POP3 and IMAP4 e-mail client in English and Chinese for Windows systems.
Kontact - KMail
Email client by KDE, supporting POP3 and IMAP mailboxes.
LibreOffice
Free office suite, open source, and compatible with .doc, .docx, .xls, .xlsx, .ppt, .pptx files. Updated regularly – download for free. Originally based on OpenOffice.org.
LibreOffice - Writer
Open-source cross-platform word processor.
Mailbird
Mailbird is the best email client for Windows 7, 8 and 10
Microsoft Office
From desktop to web for Macs and PCs, Office delivers the tools to get work done. View product information or sign in to Office 365.
ONLYOFFICE
ONLYOFFICE is a complete office and productivity suite.
Office Online
With Office Online you can view, edit, and share Word, Excel, PowerPoint, and OneNote files on your devices using a web browser, so you can work anywhere.
OfficeSuite
OfficeSuite offers office productivity tools like documents, spreadsheets, presentations and PDFs across all the devices.
Outlook
Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
SoftMaker FreeOffice
SoftMaker Office is an office suite for Windows, Linux, Android, Windows Mobile, and Windows CE.
WPS Office
Would you need Office Word, Excel or PowerPoint for Home, business or School? WPS.com would give you right version for you.
Zoho One
Zoho is an all-in-one online office suite.
eM Client
eM Client is a Windows-based email client for sending and receiving emails, and managing calendars, contacts and tasks.