BiglyBT - BiglyBT is a feature filled, open source, bittorrent client. Auto migrate from Vuze and Azureus. I2P integration, Swarm Merging, Advanced Tag System, WebTorrent support, built-in VPN kill switch, Meta-search, UPnP/DLNA access, and much more.

SABnzbd - SABnzbd is a free/open-source cross-platform binary newsreader written in Python.

rTorrent - rtorrent is a BitTorrent client for ncurses, using the libtorrent library.

NZBGet - The most efficient usenet downloader.

Nicotine+ - Nicotine+ is a graphical client for the Soulseek peer-to-peer network.

GrabIt - GrabIt is a free application that enables you to easily find and download content from Usenet news...