Seafile

Syncthing is an open source peer-to-peer file synchronisation tool.

Web-based operating system designed to be feature-rich, exceptionally fast, and highly extensible.

Access and share your files, calendars, contacts, mail and [more](https://apps.nextcloud.com/) from any device, on your terms.

File management and sharing system, supports multiple storage providers.

All-in-one solution for saving, synchronizing, viewing, editing and sharing files, calendars, address books and more.

File Sharing and Collaboration Platform.