uTorrent Still on Top, BitComet’s Market Share Plummets

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An objective sample of more than 165,000 unique IPs shows that uTorrent remains the client of choice for more than half of all BitTorrent users. Vuze is in second place with its market share growing to 18%. BitComet on the other hand is losing ground as the client's market share has dropped 38% in two months.

utorrentBitTorrent has been the leading file-sharing technology for several years already, and we at TorrentFreak decided that it would be a good idea to track the changes in popularity of the various clients. Every two months we therefore publish an updated overview of the market share of BitTorrent clients.

Today we present our second report based on data from over 165,000 unique users in more than 400 public BitTorrent swarms. The data for this BitTorrent client comparison is collected by a researcher known as ‘xXx’ of the Tribler P2P research team at Delft University of Technology.

The results in the table below show the market share for each individual client. In common with the June report, only 5 clients reached the 1% threshold, the remaining 20 that were encountered are grouped in the ‘other’ category. Some clients were not identified by libTorrent (rakshasa) and those ended up the the unknown ‘category’.

The changes in market share compared to our June report are also included, and these show some interesting trends. First of all, uTorrent kept its dominant lead and even extended its market share to 56.81 percent. BitComet – ranked fourth again – is this month’s loser with a drop of 38 percent, falling from 6.50 to 4.71 percent market share.

On the winning side we see gains for Transmission and Vuze. Transmission’s market share increased to 44 percent and may move up a few spots if it maintains this growth rate. More on this in our October report.

BitTorrent Client Market Share, August 2009
Ranking Client Market Share % Change % Platform
1 uTorrent 56.81% +1.74% Windows, Mac
2 Vuze 18.13% +7.60% Windows, Mac, Linux
3 BitTorrent Mainline 11.79% -1.83% Windows, Mac, Linux
4 BitComet 4.71% -38.00% Windows
5 Unknown 4.21% +4.51% na.
6 Transmission 2.95% +44.07% Mac, Linux
7 Other 1.40% -126.42% na.

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