List of Top Free Open Source & Self Hosted Application for Groupware

Collaborative software or groupware is designed to help people working on a common task to attain their goals. Groupware often regroups multiple services such as file sharing, calendar/events management, address books… in a single, integrated application.

BlueMind – Groupware with email, calendar, addressbooks, exchange active sync, exchange MAPI protocol support. AGPL-3.0 Java
Citadel – Groupware including email, calendar/scheduling, address books, forums, mailing lists, IM, wiki and blog engines, RSS aggregation and more. GPL-3.0 C
Corteza – CRM including a unified workspace, enterprise messaging and a low code environment for rapidly and securely delivering records-based management solutions. Apache-2.0 Go
Cozy Cloud – Personal cloud where you can manage and sync your contact, files and calendars, and manage your budget with an app store full of community contributions. GPL-3.0 Nodejs
egroupware – Software suite including calendars, address books, notepad, project management tools, client relationship management tools (CRM), knowledge management tools, a wiki and a CMS. GPL-2.0 PHP
EspoCRM – CRM with a frontend designed as a single page application, and a REST API. GPL-3.0 PHP
Group Office – Group-Office is an enterprise CRM and groupware tool. Share projects, calendars, files and e-mail online with co-workers and clients. AGPL-3.0 PHP
Horde – The Horde Project is about creating high quality Open Source applications and libraries, based on PHP and the Horde Framework. GPL-2.0 PHP
HRCloud2 – Full-featured home hosted Cloud Drive, Personal Assistant, App Launcher, File Converter, Streamer, Share Tool and more. GPL-3.0 PHP
Kolab – Kolab community is a unified communication and collaboration system. GPL-2.0/LGPL-2.1/GPL-3.0 C++/Python/PHP
Openmeetings – Openmeetings provides video conferencing, instant messaging, white board, collaborative document editing and other groupware tools using API functions of the Red5 Streaming Server for Remoting and Streaming. Apache-2.0 Java
SOGo – SOGo offers multiple ways to access the calendaring and messaging data. CalDAV, CardDAV, GroupDAV, as well as ActiveSync, including native Outlook compatibility and Web interface. LGPL-2.1 Objective-C
SuiteCRM – The award-winning, enterprise-class open source CRM. AGPL-3.0 PHP
tine – Community Edition – Contacts, Calendar, Tasks, WebDAV, ActiveSync, VoIP, Mail-Client, CRM, Sales, Projects, Timetracker. AGPL-3.0 PHP
Tracim – Collaborative Platform for team collaboration: file,threads,notes,agenda,etc. AGPL-3.0/LGPL-3.0/MIT Python
Zimbra Collaboration – Email, calendar, collaboration server with Web interface and lots of integrations. GPL-2.0/CPAL-1.0 Java