Feng Office - Feng Office is a commercial Open Source web based solution aimed to enhance collaboration and productivity
Microsoft 365 - Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online
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.
Redmine - Flexible project management web application
Quip - Quip is the modern productivity suite that simplifies your life and helps your team get work done faster.
ThinkFree Office - The office productivity suite for on-the-go featuring online collaboration and the best round-trip...