Microsoft 365 - Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online
HEY - Email at its best, new from Basecamp.
Apache OpenOffice - Apache OpenOffice is an open source, office document productivity suite.
Horde - Horde Groupware is a free, enterprise ready, browser based collaboration suite.
SoftMaker Office - SoftMaker Office is one of the most powerful and reliable office suite that is fully compatible with the MS Office Suite.
InstAddr - Disposable email address application.