I continue to be intrigued by LimeWire‘s huge and relatively unsung popularity. According to a December 13 release:

More than one-third of all PCs worldwide now have LimeWire installed, according to data jointly released by Digital Music News and media tracking specialist BigChampagne. The discovery is part of a steady ascent for LimeWire, easily the front-running P2P application and the target of a multi-year Recording Industry Association of America (RIAA) lawsuit. For the third quarter of this year, LimeWire was found on 36.4% of all PCs, a figure gleaned from a global canvass of roughly 1.66 million desktops.

The installation share is impressive, and unrivaled. But growth has actually been modest over the past year. LimeWire enjoyed a penetration level of 34.1% at the same point last year, a difference of merely 2.3%.

These figures don’t jibe with those supposedly from the same parties from earlier this year, which found LimeWire installed on 18.63% of desktops. A writer on TorrentFreak who has presumably seen the more recent report (US$295, apparently including the requisite section titled “LimeWire Challenged by…Google?”) says:

From the data where the report is based on we further learn that Limewire’s popularity is slowly declining. However, with an install base of almost 18% it is still the P2P application that is installed on most desktop computers. Unfortunately Digital Music News has trouble interpreting their own data, they claim in their press release that it is 36.4%, but that is the market share compared to other P2P clients (shame on you!).

In other open source filesharing application news, Shareaza made its first release in over two years on December 1.

Via Slyck.