23 Like Horde Good alternative? YES NO Horde Groupware is a free, enterprise ready, browser based collaboration suite. Users can manage and share calendars, contacts, tasks and notes with the standards... Free Open Source Web Self-Hosted CalDAV Add a feature
15 Like iRedMail Good alternative? YES NO A fully fledged, free email server solution, an open source project (GPL v2). Use official binary packages from Linux/BSD distributions, with both i386 and x86_64... Free Open Source Linux BSD Self-Hosted No features added Add a feature
8 Like Mail-in-a-box Good alternative? YES NO Take back control of your email with this easy-to-deploy mail server in a box. Mail-in-a-Box turns a fresh cloud computer into a working mail server. You get contact... Free Open Source Self-Hosted ownCloud Roundcube No features added Add a feature
24 Like Zimbra Collaboration Suite Alternative? YES NO Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative web application available today, Zimbra... Freemium Linux Web Real time collaboration Add a feature
15 Like Microsoft Exchange Server Alternative? YES NO 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... Commercial Windows Web Real time collaboration Add a feature
5 Like Modoboa Good alternative? YES NO Modoboa is a mail hosting and management platform including a modern and simplified Web User Interface . It provides useful components such as an administration panel or... Free Open Source Linux Self-Hosted Modular System Add a feature
18 Like hMail Server Good alternative? YES NO 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... Free Open Source Windows POP3 Support Add a feature
6 Like SophiMail Good alternative? YES NO SophiMail is a fully-featured email and collaboration server solving the most critical email issues: maximizes Privacy, Portability and Cost efficiency, Admin & User... Free BSD VirtualBox Self-Hosted KVM (Kernel-based Virtual Machine) HyperVM Citrix XenServer VMware vSphere Hypervisor FreeBSD ... Microsoft Hyper-V Server Daily Backup Indexed search CalDAV CardDAV Privacy focused Private messaging ... Schedule Backup Security focused Selective folder sharing Shared folders Team collaboration Two factor authentication Unlimited users Add a feature
14 Like MDaemon Messaging Server Alternative? YES NO 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... Commercial Windows Dropbox integration Encrypted email Group chat Support for IMAP Outlook integration Add a feature
1 Like iMail Good alternative? YES NO Fast, safe, heavy mail solution. Web-client access, LAN or WAN self-hosted server, maintenance-free design. No Windows server and database server required, unlimited... Free Windows Self-Hosted No features added Add a feature
