Resilio Sync

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 hosting and sharing solution primary for teams and organizations.

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

Unison is a file-synchronization tool for OSX, Unix, and Windows.

Turn any web server into a powerful file management system and an alternative to mainstream cloud storage providers.

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

Complete solution for your files with integration with Google and Office.

File synchronization between computers, servers, external drives.

Kinto is a minimalist JSON storage service with synchronisation and sharing abilities.

Secure File Transfer Program.