Seafile

The software provides a self‑hosted platform for synchronizing, storing, and sharing files within teams and organizations. It runs on a private server or cloud, allowing users to access and edit documents from any device while maintaining control over the underlying infrastructure. Core capabilities include high‑performance syncing, online viewing of common file formats, and support for custom file properties that can be filtered and sorted.

Collaboration features extend beyond basic sharing: users can create flexible views such as tables, galleries, kanban boards, and maps; apply multi‑level tagging with parent‑child relationships; and use built‑in collaborative editing tools for documents and wikis, complete with revision history and markdown support. Permissions are granular, offering read/write, read‑only, preview, password protection, and expiration controls for shared links.

The system emphasizes security and compliance, offering advanced encryption, backup, file‑history recovery, and audit logs. It is released under GPL‑2.0, is free to use without subscription, and is positioned as a stable, open‑source solution adopted by many teams worldwide.