LimeWire is a free (free software) peer-to-peer file sharing (P2P) client for Windows, Mac OS X, Linux, and other operating systems supported by the Java software platform (Java (software platform)). LimeWire uses the Gnutella network and also the BitTorrent protocol (BitTorrent (protocol)). A free software version and a purchasable "enhanced" version are available. The software is developed by Lime Wire LLC, which is a subsidiary of Lime Group. BitTorrent support is provided by libtorrent (libtorrent (Rasterbar)).