Open Source Zimbra Collaboration Suite Alternatives
The best open source alternative to Zimbra Collaboration Suite is Roundcube. If that doesn't suit you, our users have ranked more than 25 alternatives to Zimbra Collaboration Suite and 19 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Zimbra Collaboration Suite are Nextcloud Hub, mailcow: dockerized, Kolab Community and Horde.
Zimbra Collaboration Suite alternatives are mainly Mail Servers but may also be WebMail Providers or Calendar Apps. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Zimbra Collaboration Suite.Roundcube
Do you think this is a good alternative?YesNo- Free • Open Source
- WebMail Provider
- Email Client
28 alternatives to Roundcube- Self-Hosted
- PHP
- Cloudron
Roundcube webmail is a browser-based multilingual IMAP client with an application-like user interface. It provides full functionality you expect from an e-mail client, including MIME support, address book, folder manipulation, message searching and spell checking.
Roundcube Features
Roundcube vs Zimbra Collaboration Suite opinions
Roudcube is only web mail client not groupware solution like Zimbra
25Nextcloud Hub
Do you think this is a good alternative?YesNo- Free • Open Source
- Team Collaboration Tool
- Calendar App
53 alternatives to Nextcloud Hub- Self-Hosted
Nextcloud is the most deployed on-premises file share and collaboration platform. Access & collaborate across your devices. As fully on-premises solution, Nextcloud Hub provides the benefits of online collaboration without the compliance and security risks.
Nextcloud Hub Features
mailcow: dockerized
Do you think this is a good alternative?YesNo- Free • Open Source
- Mail Server
- WebMail Provider
18 alternatives to mailcow: dockerized- Linux
- Self-Hosted
mailcow is a mail server suite based on Dovecot, Postfix, SOGo, Rspamd and other open source software, that provides a modern Web UI for administration.
mailcow: dockerized Features
Kolab Community
Do you think this is a good alternative?YesNo- Freemium • Open Source
43 alternatives to Kolab Community- Linux
- Online
- Self-Hosted
Kolab is entirely Free and Open Source Software (a.k.a. FOSS), and uses Open Standards. We’ll get to why this is important to us, and hope that it is important to you thereafter.
Kolab Community Features
Horde
Do you think this is a good alternative?YesNo- Free • Open Source
- WebMail Provider
40 alternatives to Horde- Online
- Self-Hosted
Horde Groupware is a free, enterprise ready, browser based collaboration suite. Users can manage and share calendars, contacts, tasks and notes with the standards compliant components from the Horde Project.
Horde Features
DiscontinuedThe last release (5.2.22) was in September 2017.
Kolab Now
Do you think this is a good alternative?YesNo- Paid • Open Source
- Calendar App
- Mail Server
- Cloud Storage Service
78 alternatives to Kolab Now- Online
- Software as a Service (SaaS)
- DAVdroid
Kolab Now provides a suite of intuitive apps in a user friendly environment to make your day to day online comms easier, smarter and most importantly; secure.
Kolab Now Features
Kopano
Do you think this is a good alternative?YesNo- Paid • Open Source
- Mail Server
- Email Client
- Mobile Device Management (MDM) Tool
25 alternatives to Kopano- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- Windows Phone
- iPad
- Self-Hosted
- Microsoft Office Outlook
- S/MIME
- Software as a Service (SaaS)
Kopano puts an email, video meetings, calendaring, and file sharing solution within one single interface.
Kopano Features
OX App Suite
Do you think this is a good alternative?YesNo- Free • Open Source
- Mail Server
- WebMail Provider
- Calendar App
20 alternatives to OX App Suite- Linux
- Online
- Self-Hosted
- Software as a Service (SaaS)
The OX App Suite by Open-Xchange is web-based platform offering a suite of apps like an email client, calendar, contacts magement, cloud storage with synchronization and productivity apps for word processing, spreadsheets and presentations.
OX App Suite Features
OpenChange
Do you think this is a good alternative?YesNo30 alternatives to OpenChange- Free • Open Source
- Mail Server
- Linux
OpenChange aims to provide a portable Open Source implementation of Microsoft Exchange Server and Exchange protocols.
OpenChange Features
Blue-Mind
Do you think this is a good alternative?YesNo- Paid • Open Source
- Mail Server
- WebMail Provider
- Calendar App
10 alternatives to Blue-Mind- Linux
Blue Mind is a complete solution of company messaging, calendars and collaborative work. It aims to enable you to work daily with comprehensive, useful, efficient and effective tools.
Blue-Mind Features