Usage share of BitTorrent clients

The usage share of BitTorrent clients is the percentage of users that use a particular BitTorrent client, regardless of version.

2009

Delft University of Technology

A study by the Tribler P2P research team at the Delft University of Technology. To generate this data, samples were taken from a number of swarms of users which were then used to identify which BitTorrent client each user was using, this data was used by TorrentFreak in the table below:

Samples of Global BitTorrent Client Usage Share (Percent & Peers)

Source	Date & Age	Xunlei	μTorrent	Vuze	BitTorrent (mainline)	BitComet	Transmission	BitSpirit	FlashGet	Unknown	Tuotu	Libtorrent (Rasterbar)	Other	Sample Size
torrentfreak.com	16 September 2011	?	47.97% 267,466	22.49% 125,417	13.01% 72,536	1.01% 5,638	7% 39,011	?	?	6.22% 34,703	?	1.02% 5,703	1.27% 7,062	100% 557,536
torrentfreakEZTV	4 December 2009	29.31% 104,717,386	25.77% 92,086,035	24.08% 86,055,354	4.82% 17,207,544	4.31% 15,403,400	3.26% 11,637,110	2% 7,132,119	1.09% 3,882,628	1% 3,590,584	0.71% 2,531,472	0.63% 2,251,736	3.02% 10,806,362	100% 357,301,730
forum.tribler.org	18 October 2009	0.02% 3	60.16% 10,361	14.22% 2,449	8.65% 1,489	4.43% 763	3.65% 628	?	?	7.97% 1,373	?	0.31% 53	0.59% 102	100% 17,221
torrentfreak.com	14 August 2009	?	56.81%	18.13%	11.79%	4.71%	2.95%	?	?	4.21%	?	?	1.40%	100% 165,000+
torrentfreak.com	24 June 2009	?	55.84%	16.85%	12.01%	6.50%	1.60%	?	?	4.02%	?	?	3.17%	100% 150,000+

2007

Digital Music News

Digital Music News collected the data from PC Pitstop, a company that gathers data from computers using their free online virus and malware scanners. The program scans Windows Registry to find which clients have been installed, more than a million Microsoft Windows computers were surveyed.

Global install rate data from: Digital Music News

Rank	Application	Install % on Windows desktops
1	LimeWire	18%
2	μTorrent	5.56%
3	BitTorrent (mainline)	2.28%
4	Vuze	2.11%
5	BitComet	1.89%
6	Bitlord	1.27%