Best Groupware software in 2026

Citadel

citadel.org

Open source

Groupware including email, calendar/scheduling, address books, forums, mailing lists, IM, wiki and blog engines, RSS aggregation and more.

Colanode

colanode.com

Open source

Collaboration suite with real-time messaging, rich text pages, file management, and dynamic databases - built for offline work (alternative to Slack, Notion).

Cozy Cloud

cozy.io

Open source

Personal cloud where you can manage and sync your files, notes, contacts, passwords, and documents.

Digipad

digipad.app

Open source

An online self-hosted application for creating collaborative digital notepads (Documentation in french).

Digistorm

digistorm.app

Open source

Create collaborative surveys, quizzes, brainstorms, and word clouds (documentation in French).

Digiwall

digiwall.app

Open source

Create multimedia collaborative walls for in-person or remote work (documentation in French).

egroupware

egroupware.org

Open source

Software suite including calendars, address books, notepad, project management tools, client relationship management tools (CRM), knowledge management tools, a wiki and a CMS.

Group Office

group-office.com

Open source

Enterprise CRM and groupware tool. Share projects, calendars, files and e-mail online with co-workers and clients.

Openmeetings

openmeetings.apache.org

Open source

Video conferencing, instant messaging, whiteboard, collaborative document editing and other groupware tools using API functions of the Red5 Streaming Server for Remoting and Streaming.

SOGo

sogo.nu

Open source

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.

Tine

tine-groupware.de

Open source

Software for digital collaboration in companies and organizations. From powerful groupware functionalities to clever add-ons, tine combines everything to make daily team collaboration easier.

Tracim

github.com

Open source

Collaborative Platform for team collaboration: file,threads,notes,agenda,etc.

Zimbra Collaboration

zimbra.com

Open source

Email, calendar, collaboration server with Web interface and lots of integrations.