qBittorrent - Lightweight and open source torrent client that runs on all major platforms.
Dropbox - Online Sync and File Sharing
Deluge - Deluge is a full-featured BitTorrent client for Linux, Unix and Windows.
Syncthing - Syncthing replaces proprietary sync and cloud services with something open, trustworthy and...
µTorrent - Looking for a torrent site to download movies, music and more? Choose from top torrent sites like The Pirate Bay, RARBG, 1337X, and dozens more. (October 2019)
ownCloud - ownCloud is an open source project enabling businesses to host their own cloud storage while maintaining regulatory and compliance needs.