34 Like Kolab Community Good alternative? YES NO Kolab Groupware is a secure, scalable, reliable, flexible, full-featured collaboration suite. Free Open Source Linux Web Self-Hosted CalDAV CardDAV Real time collaboration Support for WebDAV Add a feature
3 Like IceWarp Good alternative? YES NO IceWarp integrates all communication & collaboration features in one unified solution. Available in cloud or for on-premises deployment, IceWarp is a great tool to... Commercial Windows Linux Web File-sync Group chat Integrated File Sharing Outlook integration Real time collaboration Shared calendars 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
23 Like Kopano Good alternative? YES NO Kopano puts an email, video meetings, calendaring, and file sharing solution within one single interface. Kopano helps you work smarter with people within and outside... Commercial Mac Windows Linux Web Android iPhone Android Tablet Windows Phone ... iPad Microsoft Office Outlook CalDAV On-premises software POP3 Support Real time collaboration Shared calendars Add a feature
7 Like Kerio Connect Good alternative? YES NO Kerio Connect makes email, calendars, contacts and task management easy and affordable. With Kerio Connect, you have immediate, secure access to your communications... Commercial Mac Windows Linux Web Sync Contacts POP3 Support Add a feature
7 Like Atmail Email Server Good alternative? YES NO Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows. Features: Webmail Calendar Addressbook ... Commercial Linux Web File-sync Group Mail Add a feature
8 Like Axigen Good alternative? YES NO Axigen provides a multi-tenant, fully integrated, multi-platform, all-in-one email, calendaring and collaboration messaging solution. It grants extensive branding... Commercial Mac Windows Linux BSD Self-Hosted Microsoft Office Outlook CalDAV CardDAV Delegated Administration Multiple languages Real time collaboration Shared folders ... White-labeled Add a feature
7 Like OpenChange Good alternative? YES NO OpenChange aims to provide a portable Open Source implementation of Microsoft Exchange Server and Exchange protocols. Exchange is a groupware server designed to work... Free Open Source Linux No features added Add a feature
5 Like Expanding Communication Alternative? YES NO Turnkey Solutions for the Enterprise Cloud Installation, Configuration, and Management tools for enterprise email, collaboration, messaging, video conferencing, file... Commercial Linux CalDAV Add a feature
1 Like atmail Good alternative? YES NO Atmail allows you to choose between on-premises or cloud deployment. Features include email, contact, calendar, task, storage, synchronisation and provisioning. ... Commercial Mac Windows Linux Android iPhone Android Tablet iPad On-premises software Add a feature
3 Like WikiSuite Good alternative? YES NO The most comprehensive and integrated Free / Libre / Open Source software suite ever developed. Free Open Source Linux Self-Hosted Real time collaboration Add a feature
1 Like Linchpin Good alternative? YES NO Linchpin is an efficient social intranet platform that focuses on effective collaboration and reduces complexity by means of user-specific customization. Commercial $ $ $ Mac Windows Linux Web Android iPhone Chrome OS Self-Hosted ... Confluence Customizable Real time collaboration WYSIWYG Support Add a feature
