Groupware

Open-source scheduling and appointment booking platform

Replaces Calendly, Doodle

Self-hosted meeting and event scheduling polls

Replaces Doodle, When2meet

Collaboration suite with real-time messaging, rich text pages, file

Simple, lightweight CalDAV and CardDAV server

Replaces Google Calendar, iCloud

Open-source web appointment scheduler

Replaces Calendly, Acuity Scheduling

Lightweight CalDAV and CardDAV server with web admin

Replaces Google Calendar, iCloud

Scalable groupware server with webmail, calendar and contacts

Replaces Microsoft Exchange, Microsoft 365

Open-source digital workplace and collaboration suite

Replaces Microsoft Teams, Slack

Open-source project and team collaboration platform

Replaces Jira, Confluence

Kanban-style project planning inside Nextcloud

Replaces Trello

Personal cloud platform with contacts and calendar

Replaces Google Workspace

Mail, calendar and contacts bundle for Nextcloud

Replaces Microsoft 365, Google Workspace

Open-source collaborative file storage and workspace

Replaces Google Drive, Microsoft OneDrive

Modern admin interface for sabre/dav CalDAV server

Replaces Google Calendar, iCloud

Video conferencing, instant messaging, whiteboard, collaborative

Web-based groupware and team collaboration suite

Replaces Microsoft 365, Google Workspace

Web-based groupware and CRM with email and calendar

Replaces Microsoft 365, Google Workspace

PHP groupware suite with webmail and calendaring

Replaces Microsoft Exchange

Server for sharing calendars and address books via DAV

Replaces Google Calendar, Microsoft Exchange

Integrated personal information manager for KDE

Replaces Microsoft Outlook

Open-source groupware server with mail and calendaring

Replaces Microsoft Exchange, Zimbra

Web-based collaboration and project management suite

Replaces Basecamp, Microsoft Project

All-in-one groupware, mail and collaboration server

Replaces Microsoft Exchange, Microsoft 365

Open-source collaboration platform with Outlook support

Replaces Microsoft Exchange

Professional open-source groupware and CRM

Replaces Microsoft 365, Google Workspace

Contacts management app for the Cozy personal server

Replaces Google Contacts

Create multimedia collaborative walls for in-person or remote work

Personal cloud where you can manage and sync your files, notes,

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