Microsoft Office Outlook
Commercial
Microsoft Outlook is a personal information manager from Microsoft.
Feng Office
Open Source
Feng Office is a commercial Open Source web based solution aimed to enhance collaboration and productivity.
OpenProject
Open Source
OpenProject is a web-based project management system for location-independent team collaboration.
AOL Mail
Free
AOL Mail (Aol Mail) is a free web-based email service.
Compare Zimbra Desktop with alternatives
Compare Microsoft Office Outlook and Zimbra Desktop and decide which is most suitable for you.
Compare OpenProject and Zimbra Desktop and decide which is most suitable for you.
Compare Feng Office and Zimbra Desktop and decide which is most suitable for you.
Compare AOL Mail and Zimbra Desktop and decide which is most suitable for you.