Acqlite
Go peer-to-peer with a client that uses the power of LimeWire, Acquisition and Cabos on the Gnutella network — all with open source goodness.
Chicken of the VNC
Display and interact with a remote computer screen as if it were right next to you.
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&mdash 2 so far
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Dropbox
Sync and share your files online. Can also be used for automatic backups with a history going back 30 days. The free version allows two gigabytes of data.
Poisoned
Open-source P2P file sharing program connects to the Gnutella, FastTrack and Ares networks.
Transmission
Enter the amazing world of torrents with this lightweight BitTorrent client. A simple, intuitive interface gives access to an efficient, cross-platform back-end. Also built on the BitTorrent concept is Tomato Torrent.
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Also try: Tomato Torrent
uTorrent
World’s most popular BitTorrent client features bandwidth prioritization, scheduling, RSS auto-downloading and Mainline DHT (compatible with BitComet). Supports the Protocol Encryption joint specification and peer exchange.
Vuze
Bittorrent app lets you find, download and play video files, with support for connecting to devices such as iPhone, iPod, Apple TV PS3, PSP, Xbox 360 and Tivo. Fast and convenient.