Seafile

Access and share your files, calendars, contacts, mail and more from any device, on your terms.

File storage, syncing, sharing, and collaboration with real-time editing, permission management, and desktop/CLI clients.

File sharing + sync, notes, and photos (alternative to Nextcloud and ownCloud's RSS reader).

Groupware including email, calendar/scheduling, address books, forums, mailing lists, IM, wiki and blog engines, RSS aggregation and more.

Secure File Transfer Program.

Standard Windows interoperability suite of programs for Linux and Unix. It provides secure, stable and fast file and print services for all clients using the SMB/CIFS protocol.