tine

tine is a modular, PHP-based groupware platform that provides integrated collaboration services for organizations. It bundles calendar, contacts, mail, tasks, CRM, time tracking and file management with sync protocols for common clients.

Key Features

• Unified groupware stack: calendar, address book, tasks, email client, CRM, project time tracking and file manager
• Sync protocols: CalDAV, CardDAV, WebDAV and ActiveSync for broad client compatibility
• Authentication and user management with role/permission support and licensing options
• Deployable as OCI/Docker images with support for PHP 8.1–8.3, MySQL/MariaDB and Redis backends
• Modern web UI built with JavaScript and Vue; server-side runs on PHP (php-fpm) behind Nginx or Apache
• Extensible add-on architecture and administrative tooling for operators

Use Cases

• Provide on-premises collaboration for small to medium organizations replacing cloud groupware
• Centralize CRM, email and time tracking for project billing and client management
• Synchronize calendars and contacts across mobile and desktop clients using CalDAV/CardDAV/ActiveSync

Limitations and Considerations

• Official community releases restrict free instances to five user accounts without a licence key
• Production deployments require careful planning for performance, HA and security; operators should be trained
• Some enterprise features and commercial support are available only via paid packages

tine is suitable for organizations that need a self-hosted, full-featured groupware platform with broad client compatibility and an extensible modular architecture. It is designed for administrators who can manage PHP/MySQL-based deployments and prefer on-premise control.