Microsoft Exchange Server 2003
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For messaging and collaboration Microsoft Exchange Server is one of the most used platforms. Together for Microsoft Outlook this is a powerful solution for enterprises of any size. |
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Open source Exchange Server alternatives
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 Zimbra 5.0
Available for: windows mac linux unix java
Zimbra is an open source server and client technology for next-generation enterprise messaging and collaboration. Zimbra delivers innovation for both the administrator and the end-user as well as... Read more |
Open-Xchange 0.8
Available for: windows mac linux unix java
The Open-Xchange Collaboration and Integration Server Environment allows you to create, store and link appointments, contacts, tasks, email, bookmarks, documents, forums and many more elements and... Read more |
Zimbra 5.0
