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The flexible storage backend allows administrators to extend their setup by adding other servers or cloud accounts. Grommunio is designed for a very large number of users and-just like Exchange-supports database sharding (horizontal distribution of databases across multiple hosts). grommunio is also equipped with basic mobile device management (MDM). For example, the developers have integrated Jitsi (video and audio telephony), Mattermost (chat), and file sharing and syncing ( ownCloud). Also included: Exchange ActiveSync for mobile devices and various standard protocols like CalDAV (calendar), CardDAV (address book), IMAP, POP3, SMTP, and LDAP, as well as Active Directory (for syncing of user accounts).Įxternal open source applications provide some features not supported by Microsoft's API or protocols.
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grommunio works with various open source and proprietary mail clients, like Windows Mail, Outlook, Android, Apple Mail/iOS, Thunderbird, etc., and supports both the older RPC over HTTP protocol and the Outlook standard protocol MAPI over HTTP. Unlike Exchange, grommunio offers a mail server that's standards-compliant as well as a fully functional groupware solution with features like email, contacts, calendar, tasks, file sharing, and more. It is developed and supported by the Austrian company of the same name. Grommunio, formerly known as grammm, is published under the AGPLv3 license.
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It's not just about becoming vendor-independent and reducing costs it's about using software with open standards and a different level of security-for the groupware server itself and the operating system behind it.Īll five alternatives in this article are Linux-based. In this article, I look at some open source alternatives and their advantages. However, many companies have concerns about storing their data in the Microsoft cloud. Since Exchange is closely integrated with Microsoft's Office products, users have access to a wide variety of productivity software and features, whether they're using a desktop or a mobile client. This top dog dominates the corporate world, and the omnipresent Outlook mail client has become the de facto standard for groupware. Welcome to the communityįor decades, Microsoft Exchange has ruled the market for email and groupware services.Running Kubernetes on your Raspberry Pi.
A practical guide to home automation using open source tools.6 open source tools for staying organized.