EGroupware AlternativesMail Servers and other similar apps like EGroupware

On-premises solution offering file sync, universal data access and collaboration through Nextcloud Files, Talk, and Groupware. Ensures secure, controlled data storage for enterprise with powerful privacy tools including encryption, fine-grained access, and a bug bounty.

Wekan, formerly LibreBoard, is an open-source and collaborative Trello -like kanban board application.

Outlook.com, part of Office Online (not to be confused with Microsoft Outlook ), is a webmail service from Microsoft, successor of Hotmail.

Kanboard is a free and open source Kanban project management software.

Kanban Tool is a leading visual management software based on Kanban method, that helps companies visualize workflow, track project progress and analyze and significantly improve business processes.

Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative web application available today, Zimbra boosts the productivity of users on any desktop and dramatically reduces TCO compared to legacy platform vendors.

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.

Exchange business-class email helps increase user productivity while protecting your data. Get it as a hosted service or run it on your servers.

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 the use of standard protocols such as CalDAV, CardDAV and GroupDAV.Share your calendars, address books and mails in.

Kopano puts an email, video meetings, calendaring, and file sharing solution within one single interface.

grommunio (formerly known as grammm) efficiently combines all requirements of modern, digital communication and collaboration.

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.