federal court judge Kimba Wood issued an injunction ordering LimeWire to prevent 'the searching, downloading, uploading, file trading and/or file distribution functionality, and/or all functionality' of its software in Arista Records LLC v. BitTorrent support is provided by libtorrent. A zero-cost version and a purchasable 'enhanced' version (called LimeWire Pro) were available LimeWire Pro could be acquired through the regular LimeWire software without payment, as users distributed it through the software without authorization. LimeWire uses the gnutella network as well as the BitTorrent protocol.
LimeWire is a discontinued free software peer-to-peer file sharing (P2P) client for Windows, OS X, Linux and Solaris.