LimeWire is a peer-to-peer file sharing (P2P) client for the Java Platform, which uses the Gnutella network to locate files as well as share files. Released under the GNU General Public License, LimeWire is free software. It also encourages the user to pay a fee, which will then give the user access to LimeWire PRO. Recently LimeWire opened its own store.

The PRO version offers some improvements over the Basic version:

It offers personalized technical support.
It provides more search results by connecting to 5 UltraPeers instead of 3 UltraPeers.
It comes with extra skins, including a special "PRO-only" skin.
It allows downloads to come simultaneously from 10 peers rather than only 8.