Resilio Sync

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

Powerful file hosting script with support for Amazon S3, Wasabi, Backblaze, local, direct and SFTP...

File hosting and sharing solution primary for teams and organizations

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

Minimalist JSON storage service with synchronisation and sharing abilities

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