SOGo
Free and open-source groupware server with webmail, calendar, and contacts, compatible with Outlook, Thunderbird, and mobile devices.
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Self-hosted Exchange alternative with shared calendars, contacts, and email via CalDAV/CardDAV/ActiveSync.
Core Features
- Web interface + CalDAV/CardDAV/ActiveSync for unlimited clients
- Shared calendars, tasks, address books with delegation and resource booking
- Multi-domain management, LDAP integration for enterprise deployments
- Native integration with Outlook (via Sogo Connector) and Thunderbird
- Active community with 50+ language translations
What It Can't Do
- •Relies on GNUstep and SOPE – compilations can be tricky; prefer Docker/ packages. 2. Email requires external IMAP (e.g., Dovecot) – not a full mail server. 3. ActiveSync may have patent restrictions in some regions.
Use Cases
- Small/medium businesses replacing Exchange / Office 365
- Educational institutions or non-profits needing a free groupware solution
- Teams wanting full data control with multi-client sync
Detailed Introduction
SOGo is a modern, scalable groupware server that offers shared calendars, address books, and email access through a web interface and standard protocols (CalDAV, CardDAV, ActiveSync, IMAP). It integrates seamlessly with Microsoft Outlook (via a plugin), Mozilla Thunderbird, and mobile clients. Designed as an open-source alternative to Exchange, it supports delegation, resource booking, and multi-domain management. The project is actively maintained by Alinto and has a large community contributing translations and patches.
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Getting Started
Download installer
Click the button above to download the installer for your system
Install the software
Double-click the downloaded installer and follow the prompts
Step 1: Deploy with Docker: `docker run -d -p 80:80 -p 443:443 sogo:latest`
Step 2: Access http://localhost/sogo, default admin credentials (see docs)
Step 3: Configure CalDAV/CardDAV on clients or install Sogo Connector for Outlook
- Step 1: Deploy with Docker: `docker run -d -p 80:80 -p 443:443 sogo:latest`
- Step 2: Access http://localhost/sogo, default admin credentials (see docs)
- Step 3: Configure CalDAV/CardDAV on clients or install Sogo Connector for Outlook
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Open Source Transparency
View GitHub SourceUninstall Info
If using Docker, run `docker stop <container>` and `docker rm <container>`, then remove volumes. For native install, delete `/usr/local/lib/GNUstep/SOGo` and related config files.
No Extra Dependencies
Ready to use after download. No additional runtime required.
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