Roundcube 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... Free Open Source Self-Hosted PHP Cloudron Hostable PGP Encryption Add a feature 137 Like
Kolab Community 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 34 Like
Zimbra Collaboration Suite 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 ActiveSync Real time collaboration Add a feature 27 Like
SOGo SOGo is groupware server with a focus on scalability and open standards. SOGo provides a rich AJAX-based Web interface and supports multiple native clients through... Free Open Source Linux Web Thunderbird Cloudron CalDAV CardDAV Add a feature 25 Like
Axigen Axigen provides a multi-tenant, fully integrated, multi-platform, all-in-one email, calendaring and collaboration messaging solution. It grants extensive branding... Commercial Mac OS X Windows Linux BSD Self-Hosted ... Microsoft Office Outlook CalDAV CardDAV Delegated Administration Multiple languages ... Real time collaboration Shared folders White-labeled Add a feature 8 Like
Microsoft 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... Commercial Windows Web Real time collaboration Add a feature 15 Like
Citadel Is a collaboration suite (messaging and groupware). It is designed to run on open source operating systems such as Linux or BSD. In order to modernize the Citadel... Free Open Source Linux Web Real time collaboration Add a feature 4 Like
iMail 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 2 Like
OBM OBM is a free messaging and collaboration platform useful for just a couple to many thousands of users with strong support for mobile devices. Free Open Source Mac OS X Windows Linux CalDAV Real time collaboration Add a feature 3 Like
Postaci Postaci (Turkish for Postman) is multiplatform Webmail software which is database independent, multilanguage, POP3/IMAP, and fully MIME-compatible. While using POP3 mode... Free Open Source Linux No features added Add a feature 0 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... Free Open Source Linux Web No features added Add a feature 7 Like
atmail Atmail allows you to choose between on-premises or cloud deployment. Features include email, contact, calendar, task, storage, synchronisation and provisioning. ... Commercial Mac OS X Windows Linux Android iPhone ... Android Tablet iPad On-premises software Add a feature 1 Like
Expanding Communication 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 5 Like
SophiMail 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 VMware vSphere Hypervisor Daily Backup Indexed search CalDAV CardDAV ... Data portability Privacy focused Private messaging Schedule Backup Security focused Selective folder sharing Shared folders Team Collaboration Two factor authentication Unlimited users Add a feature 6 Like
Netrepid Hosted Exchange Services Hosted Exchange solutions from Netrepid - the best hosted exchange provider. Accelerate your technology at on demand speed. Commercial Web No features added Add a feature 1 Like
