The Best 29 Expanding Communication Alternatives
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34 LikeKolab Community
Kolab Groupware is a secure, scalable, reliable, flexible, full-featured collaboration suite.
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27 LikeZimbra Collaboration Suite
Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more.
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19 Like
hMail Server
hMailServer is a free e-mail server for Microsoft Windows. Its used by Internet service providers, companies, governments, schools and enthusiasts in all parts of the world.
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15 LikeMicrosoft Exchange Server
Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft. It is part of the Microsoft Servers line of server products and is widely used by enterprises using Microsoft infrastructure solutions.
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14 LikeMicrosoft Office 365
office 365 is a subscription-based software services that licenses microsoft office products for on-premise or cloud-based use. for consumers, the service allows the use of https://alternativein .
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14 Like
MDaemon Messaging Server
Low cost, easy to use Email Server software for virtual, on-premise, or hosted deployments for companies that want control of their email. Integrated web-mail with doc sharing, Drop Box integration, client and server side encryption.
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10 LikeOX Open-Xchange
Open-Xchange Server 6 is the most advanced Linux based Groupware solution f.
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7 Like
eGroupWare
Egroupware is a web based software for team collaboration, central data management and CRM: email client, online calendar, contact and task management, project and file management, trouble ticket system, synchronization.
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7 LikeAtmail Email Server
Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows.
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7 Like
OpenChange
OpenChange aims to provide a portable Open Source implementation of Microsoft Exchange Server and Exchange protocols.
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3 Like
Mercury Mail Transport System
The Mercury Mail Transport System is a mail server that sends and receives messages on behalf of a group of users on a machine or local area network.
