SOGo
SOGo presents itself as open-source groupware focused on calendars, contacts and webmail for businesses and communities.
You can run it On-Premises / Self-hosted. The actively maintained software contains components under GPL v2 and LGPL v2.1. It uses Objective-C and JavaScript, among other technologies. The vendor sells support and access to the official release repository. The free nightly packages are a separate matter.
Fact Sheet
- Categories
- Status
- Actively maintained
- License
- GPL-2.0
- LGPL-2.1
- Operation
- On-Premises / Self-hosted
- Technologies
- Objective-C
- JavaScript
- Single Sign-On (SSO)
- Yes: Open source Source
- MCP server
- Unknown: not specified
Open-Source Alternatives
In the Category «Calendar»
ERPNext
ERPNext combines accounting, quotes, invoices, and time tracking with subscription and contract management in one web application.
- Accounting
- Appointment Scheduling
- Calendar
- Contracts
- CRM
- ERP
- Invoicing
- Project Time Tracking
Nextcloud
Nextcloud stores and shares files and syncs them across devices. Teams access them through the browser, desktop, and mobile devices.
- Calendar
- File Sync and Sharing
Odoo Community
Odoo Community brings together sales, purchasing, inventory, invoicing, calendar, and time tracking in a modular business suite.
- Calendar
- CRM
- Employee Time Tracking
- ERP
- Invoicing
- Project Time Tracking
XWiki
XWiki manages company knowledge and public wiki pages with a visual editor, search, versioning, and access rights. An optional paid app adds team calendars.
- Calendar
- CMS
- Knowledge Bases