LimeWire has picked up popularity over the years since the death of Napster (the free, arguably illegal version anyhow), and the tendency for KaZaA users to get sued for file sharing. The biggest complaint you'll hear from users is the constant nagging to upgrade to the Pro version of LimeWire, which makes oodles of sense since you are illegally downloading files anyway, might as well pay someone for nothing.
This is where FrostWire comes in. A completely open source, and free, alternative to LimeWire, it'll give you all of the features of the original plus a few more. It'll be an interesting moment if LimeWire claims some sort of infringement, then we can all sit back and enjoy the irony. Yes, there are legal uses for this technology, but ... yeah, we're sure that's all anyone is doing.
(via DownloadSquad)