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Run your own file upload site like Rapidshare or MegaUpload with XFileSharing script. XFileSharing script is an advanced solution for creating free file hosting websites.

Azureus SpeedUp PRO is a powerful accelerator designed to speed up your Azureus file sharing program. You will download MP3s, movies and other desired files faster than ever.

PyroTrans is a transfer package (client, server batch) that allows users to manually or automatically exchange files between computers over the phone. The product offers easy and reliable file transfer, either manually or controlled by other software

Azureus implements the BitTorrent protocol using java language and comes bundled with many invaluable features for both beginners and advanced users

StrongDC++ is a client for sharing files in Direct Connect network. It is modification of program DC++ and it brings many news and features from other modification. Since DC++ is developed under GNU/GPL, you can download source and modify it.