Comparison of BitTorrent clients

The following is a general comparison of BitTorrent clients, which are computer programs designed for peer-to-peer file sharing using the BitTorrent protocol.[1]

The BitTorrent protocol coordinates segmented file transfer among peers connected in a swarm. A BitTorrent client enables a user to exchange data as a peer in one or more swarms. Because BitTorrent is a peer-to-peer communications protocol that doesn't need a server, the BitTorrent definition of client differs from the conventional meaning expressed in the client–server model.[1]

Bram Cohen, author of the BitTorrent protocol, made the first BitTorrent client, which he also called BitTorrent, and published it in July 2001.[2]

Many BitTorrent programs are open-source software; others are freeware, adware or shareware. Some download managers, such as FlashGet and GetRight, are BitTorrent-ready. Opera 12, a web browser, can also transfer files via BitTorrent.

In 2013 Thunder Networking Technologies admitted that some of their employees surreptitiously distributed a Trojan horse with certain releases of Xunlei, the company's BitTorrent-ready download manager.[3][4] Xunlei is included in the comparison tables.

Applications

General

Name Developer Software license Latest stable software release Operating system Year (not dynamic, but easier for sorting)
ABC various PSFL 3.1 (October 2, 2005[5]) Windows, Linux 2005
Acquisition Acquisition Proprietary 2.2 (v223) (November 19, 2010 (2010-11-19)) [±] OSX 2010
BitComet BitComet Development Group Proprietary, Adware 1.45 (January 17, 2017 (2017-01-17)) [±][6] Windows 2017
BitLet various ASL ? (Java runtime) 2015
BitLord House of Life Proprietary, Adware

installs WhenU adware

 Windows:

2.4.5 (February 13, 2017 (2017-02-13)) [±]

Mac OSX:
2.4.4-308 (June 25, 2016 (2016-06-25)) [±]

 Windows, OSX 2017
BitSpirit ByteLinker Inc. Proprietary 3.6.0.550 (December 29, 2010 (2010-12-29)[7]) [±] Windows 2010
BitTornado John Hoffman MIT 0.3.17 (October 19, 2006 (2006-10-19)) [±] Windows, OSX, Linux, BSD 2006
BitTorrent BitTorrent Proprietary, Adware Windows:

7.9.9 (Build 43917) (June 19, 2017 (2017-06-19)) [±][8]

macOS:
7.4.3 (Build 42732) (October 22, 2016 (2016-10-22)) [±][9]

 Windows, OSX 2017
BitTyrant University of Washington GPL 1.1.1 (September 7, 2007 (2007-09-07)[10]) [±] Windows, OSX, Linux 2007
Blog Torrent Downhill Battle GPL 0.92 (April 20, 2005 (2005-04-20)) [±] Windows, OSX 2005
Deluge various GPL 1.3.15 (May 12, 2017 (2017-05-12)) [±] Windows, OSX, Linux, BSD 2017
FlashGet Trend Media Proprietary 3.7.0.1220 (May 17, 2013 (2013-05-17)[11]) [±] Windows 2012
Folx Eltima Software Proprietary 5.0.13493 (May 26, 2016 (2016-05-26)) [±] OSX 2016
Free Download Manager alervd Proprietary 5.1.29 (build 6471) (June 16, 2017 (2017-06-16)) [±][12] Windows, OSX 2017
FrostWire The FrostWire Project GPL
Optionally installs Ask.com toolbar		 6.5.4 (August 1, 2017 (2017-08-01)) [±] Windows, OSX, Linux, Android 2016
KGet KDE GPL 4.14.3 (November 11, 2014 (2014-11-11)) [±][13] Linux, Firefox 2014
KTorrent Joris Guisson, Ivan Vasić GPL 5.0.1 (April 17, 2016 (2016-04-17)[14]) [±] Linux 2016
Lftp Alexander V. Lukya GPL 4.7.7 (March 7, 2017 (2017-03-07) [15]) [±] Linux 2017
LimeWire Lime Wire LLC GPL 5.5.16 (September 30, 2010 (2010-09-30)) [±] Windows, OSX, Linux 2010
Meerkat Bittorrent Client 47 Software Proprietary 1.5.8 (August 28, 2011 (2011-08-28)) [±] Windows 2011
Miro Participatory Culture Foundation GPL 6.0 (April 16, 2013 (2013-04-16)) [±][16] Windows, OSX, Linux 2013
MLDonkey MLDonkey Project GPL 3.1.5 (March 22, 2014 (2014-03-22)[17]) [±] Windows, OSX, Linux, MorphOs 2014
µTorrent Ludvig Strigeus Proprietary, Adware [a] Microsoft Windows:
3.5.0 (build 43916) (June 19, 2017 (2017-06-19)) [±][18][19]

OS X for Intel:
1.8.7 (build 43796) (May 8, 2017 (2017-05-08)) [±][20][21]
OS X for PPC:
1.6.5 (build 27624) (May 15, 2015 (2015-05-15)) [±][20][22]
Android:
3.39 (May 23, 2017 (2017-05-23)) [±][23][24]

 Windows, OSX, Android 2017
OneSwarm University of Washington GPL 0.7.5 (May 23, 2011 (2011-05-23)[25]) [±] 2011
Opera 12 Opera Software Proprietary Windows (Presto) – 12.17
Linux, FreeBSD, MacOS X – 12.16		 Windows, OSX, Linux 2016
qBittorrent Christophe Dumez GPL 3.3.14 (July 19, 2017 (2017-07-19)) [±][26] Windows, OSX, Linux, BSD 2017
rTorrent Jari Sundell GPL rTorrent 0.9.6 / libTorrent 0.13.6 (September 3, 2015 (2015-09-03)) [±][27] Linux 2015
Robert Sponge, co-developer of I2P GPL 2009
Shareaza Shareaza Development Team GPL 2.7.9.0 (October 6, 2015 (2015-10-06)[28]) [±] Windows 2015
SymTorrent Imre Kelényi GPL 1.51 (October 23, 2012 (2012-10-23)[29]) [±] Symbian 2011
Tixati Kevin Hearn Proprietary 2.53 (February 22, 2017 (2017-02-22)[30]) [±] Windows, Linux 2017
Tomato Torrent Sarwat Khan BT OSL 1.5.1 (October 27, 2007[31]) OSX 2007
Tonido CodeLathe Proprietary 3.62.0.21836 (December 31, 2012 (2012-12-31)) [±] Windows, OSX, Linux, BSD 2012
TorrentFlux various GPL 2.4 (June 18, 2008 (2008-06-18)[32]) [±] PHP Server 2008
Transmission various GPL/MIT 2.92 (March 6, 2016 (2016-03-06)) [±][33] Windows, Linux 2016
Tribler The Tribler Team LGPL 6.5.2 (May 13, 2016 (2016-05-13)) [±][34] Windows, OSX, Linux, Android 2016
Vuze (formerly Azureus) Vuze Proprietary (platform), GPL (core engine), Adware 5.7.4.0 (November 21, 2016 (2016-11-21)) [±][35] Windows, OSX, Linux, Android 2016
WebTorrent MIT MIT WebTorrent 0.98.18 (April 14, 2017 (2017-04-14)) [±][36] 2017
Wyzo Radical Software Proprietary 3.6.4 (September 24, 2010 (2010-09-24)) [±] Windows, OSX 2010
Xunlei Thunder Networking Technologies Proprietary Microsoft Windows:
9.1.26.614 (23 February 2017 (2017-02-23)) [±][37]

macOS:
3.0.4.2714 (27 February 2017 (2017-02-27)) [±][37]

iOS:
5.20 (18 June 2016 (2016-06-18)) [±][37]

Android:
5.33 (28 February 2017 (2017-02-28)) [±][37]

 Windows, OSX, Android, iOS 2017
Name Developer Software license Latest stable software release Year
a : The option to disable ads is included in the settings.[38]

Operating system support

BitTorrent client Windows Mac OS X Linux BSD iOS Android Other
ABC Yes No Yes No No No No
Acquisition No Yes No No No No No
BitComet Yes No No No No No No
BitLet Web Web Web No No No No
BitLord Yes Yes No No No No No
BitSpirit Yes No No No No No No
BitTornado Yes Yes Yes Yes No No No
BitTorrent Yes Yes No No No Yes[39] No
BitTyrant Yes Yes Yes Yes No No No
Blog Torrent Yes Yes No No No No No
Deluge Yes Yes Yes Yes No No Solaris
FlashGet Yes No No No No No No
Folx No Yes No No No No No
Free Download Manager Yes Yes No No No No No
Frostwire Yes[40] Yes[40] Yes[40] Yes[40] No[40] Yes[40] Unix-like,[40] z/OS,[41] Solaris, OS/2, eComStation[42]
KGet No No Yes Yes No No No
KTorrent No Yes Yes Yes No No No
LimeWire Yes Yes Yes Yes No No Yes
Meerkat Bittorrent Client Yes No No No No No No
Miro Yes Yes Yes Yes No No No
MLDonkey Yes Yes Yes Yes No No Solaris, MorphOS
µTorrent Yes Yes Web No No Yes[43] No
OneSwarm Yes Yes Yes No No No No
Opera 12 Yes[Note 1] Yes Yes[Note 1] Yes[Note 1] No Yes Solaris
qBittorrent Yes[44] Yes[44] Yes[44] Yes[44] Yes[44] No[45] eComStation[44]
rTorrent Yes, through Cygwin[46] Yes Yes Yes No No Solaris
Shareaza Yes No No No No No No
SymTorrent No No No No No No Symbian
Tixati Yes No Yes No No No No
Tomato Torrent No Yes No No No No No
Tonido Yes Yes Yes Yes No No No
TorrentFlux Yes Yes Yes Yes No No No
Transmission Yes, as an unofficial build[Note 1] Yes Yes Yes Yes, through Cydia No Solaris, OpenWrt
Tribler Yes Yes Yes Yes No Yes No
Vuze Yes Yes Yes Yes No Yes[47] No
WebTorrent Yes Yes Yes No No No Browsers (WebRTC/WebSockets)
Wyzo Yes Yes No No No No No
Xunlei Yes Yes No No Yes Yes No
Name Windows Mac OS X Linux BSD iOS Android Other

Interface and programming

BitTorrent client GUI Remote CLI Other Programming language Based on IPv6 µTP
ABC Yes Yes No No Python BitTornado buggy[Note 2] No
Acquisition Yes No No No Objective-C, Cocoa Limewire No No
BitComet Yes Yes Partial[48] No C++ - No No
BitLet No No No Webapp Java Applet - No No
BitLord Yes No No No Python, C++ libtorrent (Rasterbar) Yes No
BitTornado Yes No Partial No Python BitTorrent Yes No
BitTorrent 5, Mainline Yes No Partial No Python - No No
BitTorrent 6 Yes Yes Partial No C++ µTorrent Yes Yes
BitTyrant Yes Yes Partial Telnet, XML over HTTP remote control API Java, SWT Azureus Yes No
Blog Torrent Yes No No No ? ? No No
Deluge Yes Yes Yes Daemon Python, C++ libtorrent (Rasterbar) Yes Yes[49]
FlashGet Yes No No No ? ? No No
Free Download Manager Yes Yes Partial No C++ libtorrent (Rasterbar) No No
Frostwire Yes No No No Java LimeWire No Yes[50]
KGet Yes Yes Partial[Note 3] No C++ - Yes No
KTorrent Yes Yes Partial No C++ - Yes Yes[51]
LimeWire Yes No No No Java libtorrent (Rasterbar) No No
Meerkat Bittorrent Client Yes No No No C++ - No No
Miro Yes No No No C++ libtorrent (Rasterbar) No No
MLDonkey No Third Party[52] Partial Telnet OCaml - No No
µTorrent Yes Yes No[53] RESTful Web API[54] C++[55] - Yes[56] Yes[57]
OneSwarm Partial Yes No-partial No Java Azureus Yes No
Opera 12 Yes No No No C++ - Yes No
qBittorrent Yes Yes Partial No C++, Python libtorrent (Rasterbar) Yes Yes[58]
rTorrent No Third Party Yes SCGI C++ libTorrent (Rakshasa) No[59] No
Shareaza Yes Yes Partial No C++ - No No
SymTorrent Yes No No No ? ? No No
Tixati Yes Yes No No C++ - Yes Yes[60]
Tomato Torrent Yes No No No Cocoa BitTorrent No No
Tonido No Yes No No C++ libtorrent (Rasterbar) No No
TorrentFlux No Yes No No PHP BitTornado No No
Transmission Yes Yes Yes Daemon, JSON-RPC over HTTP remote control API C, Objective-C - Yes Yes[61]
Tribler Yes Partial Partial No Python,C++ libtorrent (Rasterbar) No Yes
Vuze (formerly Azureus) Yes Yes Partial Telnet, XML over HTTP remote control API Java, SWT - Yes Yes[62]
WebTorrent Yes Yes Yes JavaScript, works in Node.js and web browsers JavaScript - Yes No
Xunlei Yes No No remote control over internet[63] C++ - No No
BitTorrent client GUI Web CLI Other Programming language Based on IPv6 µTP

Features I

BitTorrent client Magnet URI Preload Magnet metadata [Note 4] Super-seeding Embedded tracker UPnP [Note 5] NAT Port Mapping Protocol NAT traversal [Note 6] DHT [Note 7] Peer exchange Encryption UDP tracker LPD Proxy server
ABC No No No Yes Yes No No No No No No No No
Acquisition No No No No No Yes No No No No No No No
BitComet Yes No Yes Separate download Yes Yes Yes Yes Yes Yes Yes No HTTP 1.1, SOCKS4-4a-5
BitLet No No No No Yes No No No No No No No No
BitLord Yes No No No Yes Yes Yes Yes Yes Yes Yes Yes HTTP 1.1, SOCKS4-4a-5
BitTornado No No Yes Yes[Note 8] Yes No No No No Yes No No No
BitTorrent 5, Mainline No No No Yes[Note 8] Yes Yes No Yes Yes Yes No No Yes
BitTorrent 6 Yes Yes Yes Yes Yes Yes Yes Yes Yes[Note 9] Yes Yes Yes HTTP(S), SOCKS4-5
BitTyrant No No Yes Yes Yes Yes Yes[Note 10] Yes[Note 11] Yes Yes No No No
Blog Torrent No No No Yes No No No No No No No No No
Deluge Yes No No No Yes Yes Yes Yes Yes Yes Yes Yes HTTP(S), SOCKS4-5
FlashGet No No No No No No No Yes No Yes No No No
Free Download Manager Yes No No No No No No Yes Yes No No No No
KTorrent Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Partial HTTP, SOCKS4-5
LimeWire Partial No Yes Yes Yes Yes No Yes Yes Yes Yes No No
Meerkat Bittorrent Client No No Yes No Yes Yes Yes Yes No Yes No No No
MLDonkey Yes[64] No No Yes Yes Yes No Yes No No Yes No No
µTorrent Yes Yes[65] Yes[66] Yes[67] Yes[68] Yes Yes[69] Yes[Note 12] Yes[Note 9] Yes[70] Yes Yes[71] HTTP(S), SOCKS4-5
OneSwarm No No Yes Yes Yes Yes Yes Yes Yes Yes Yes No No
Opera 12 No No No Yes[72] No No No No Yes[73] No No No No
qBittorrent Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes HTTP(S), SOCKS4-5
rTorrent Yes[74] No Yes No No No No Yes Yes Yes Yes No[75] No
Shareaza Yes No No No Yes Yes No Yes[Note 13] Yes No Yes[Note 14] No No
SymTorrent No No No No No No No No No No No No No
Tixati Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes only with out going without DHT if anonymity required
Tomato Torrent No No No Yes No No No Yes No No No No No
Tonido No No No No Yes Yes Yes Yes No No No No No
TorrentFlux No No Yes No Yes No No No No Yes No No No
Transmission Yes Yes[76][77][78] No No Yes Yes Yes Yes Yes[Note 15] Yes Yes Yes No[79]
Tribler Yes No No Yes Yes Yes No Yes Yes Yes No No Uses P2P onion routing to provide anonymity.
Vuze (formerly Azureus) Yes Yes Yes Yes Yes Yes Yes[Note 16] Yes[Note 11] Yes Yes Yes Plugin HTTP(S)?, SOCKS4-4a-5
WebTorrent Yes No No No No No Yes Yes Yes Yes Yes No No
Xunlei Yes No No Yes Yes Yes Yes Yes Yes No Yes Yes HTTP, SOCKS5, FTP
BitTorrent client Magnet URI Preload Magnet metadata Super-seeding Embedded tracker UPnP NAT Port Mapping Protocol NAT traversal DHT Peer exchange Encryption UDP tracker LPD Proxy server

Features II

BitTorrent client Cache [Note 17] Hash Web seeding HTTP Web seeding Broad-catching (RSS) Prioritization Selective downloads Sequential downloading SOCKS Tracker exchange [80] Remote control via web Search engine Auto updates Reviews and Comments Notes
ABC No Yes No No Yes No No No No Yes Separate download No No
Acquisition No No No No No No No No No No No No 3 torrents max, infinite when registered
BitComet Yes No Partial [Note 18][81] Beta Yes Yes Yes[Note 19] Yes No Yes Built-in Web browser Yes No Portable version available
BitLet No No No No No No No No No No No Yes No
BitLord Yes No Partial [Note 20] [Note 18] Yes Yes Yes No Yes No No Built-in Web browser Yes No
BitTornado Yes Yes No No Yes Yes No No No No No via PMS No
BitTorrent 5, Mainline No Yes Partial [Note 18] No Yes Yes No No No No Yes Yes No
BitTorrent 6 Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes
BitTyrant Yes Yes[82] Yes Plugin Yes Yes No Yes No Plugin[Note 21] 3rd party plugins Yes No Upload priority optimized according to a series of research papers
Blog Torrent No No No No No No No No No No No No No
Deluge Yes Yes Partial [Note 20] Plugin Yes Yes No Yes No Yes No via PMS No
FlashGet No No No No No No No No No No No No FlashGet (standalone application) is not FlashGot (Firefox Addon)
Free Download Manager No Yes No No Yes Yes No No No Yes No Optional No
KTorrent Yes Yes Yes Yes Yes Yes Yes No Yes Built-in Web browser via PMS No
LimeWire Yes Yes No No Yes Yes No Yes No No No Yes No
Meerkat Bittorrent Client Yes No No No No No No No No No No No
MLDonkey Yes No 3rd party bash script Yes No No No[83] No Yes Built-in Web browser via PMS No
µTorrent Yes Yes[84] Partial [Note 18] Yes[85] Yes[86] Yes Yes[Note 22] Yes No Yes Yes Yes Yes
OneSwarm Yes Yes Partial [Note 18] No Yes Yes No Yes No No No Yes No has all BitTyrant features
Opera 12 No No Yes[Note 23] No No No No No No built-into Web browser Windows and Mac OS X only; via PMS on Linux No Web browser
qBittorrent Yes Yes Partial [Note 20] Yes Yes Yes Yes Yes hard-coded as disabled in newer versions Yes Yes via PMS No
rTorrent Partial No No 3rd party utility [87] Yes Yes No No No Yes No via PMS No No built-in disk cache but a delayed sync
Shareaza Yes Yes No No Yes Yes[Note 24] in mod client No Yes
[Note 25][88][Note 26]		 Yes Yes Yes No [Note 27]
SymTorrent No No No No No No No No No No No No BitTorrent client for cell phones
Tixati Yes Yes Partial [Note 20] [Note 28] [Note 18] Yes Yes Yes Yes Yes Yes Yes No Yes No lightweight client, Portable version available, option to keep all peers unchoked available

Integral encrypted chatrooms that allow streaming audio and video, link sharing and searching

Tomato Torrent No No No No No No No No No No No No No supports AppleScript
Tonido No No No Yes Yes No No No Yes No Yes No
TorrentFlux Yes Yes No Yes Yes Yes No No No Yes Yes No No
Transmission Yes No Partial [Note 18][Note 29] No Yes Yes Yes[89][90] No No Yes No Yes No
Tribler Yes No No Yes Yes Yes No No No Partial Yes (DHT)[91] Yes No Fully distributed keyword search; integrated anti-spam measures[92]
Vuze (formerly Azureus) Yes Yes[82] Yes Yes Yes in paid version [93] Yes No Plugin[Note 21] Yes Yes Yes[94] The only client to bridge between i2p and the clearnet.
WebTorrent Yes No Partial [Note 18] No Yes Yes Yes No No No No Yes No Runs on desktop and web browsers. Desktop and browsers can communicate via WebRTC
Xunlei Yes No Yes Yes Yes Yes Yes No Yes No
BitTorrent client Cache Hash Web seeding HTTP Web seeding Broad-catching (RSS) Prioritization Selective downloads Sequential downloading SOCKS Tracker exchange Remote control via web Search engine Auto updates Reviews and Comments Notes
  1. 1 2 3 4 x86-32 and x86-64builds available
  2. ↑ Announcements to the tracker are made via IPv6 if possible, but the client doesn't listen on the respective port.
  3. ↑ Qdbus interface
  4. ↑ For a torrent added from a Magnet link, obtain the list of files (and other metadata) before prompting the user for a download location.
  5. ↑ Automatically configure port forwarding (requires Router with UPnP support)
  6. ↑ Many clients claim to support this, but just UPnP calls for opening a TCP port is not effective and disabled by factory default in most new hardware. "UDP NAT Traversal" is the proper working solution, supported by just a few.
  7. ↑ DHT permits use of trackerless torrents (with supporting clients) to resume normal torrents when their tracker is down. However, some trackers that register their users for keeping tabs on fair usage (such as a ratio of bytes downloaded to uploaded) may not reliably measure and update usage for users employing DHT.
  8. 1 2 Tracker included with Linux binaries and with source, but not with Windows binary.
  9. 1 2 Exchanging with BT 6 and µTorrent clients (and now MooPolice).
  10. ↑ It's UDP based, an experimental feature and only supported by other Azureus based clients.
  11. 1 2 Has its own DHT, a mainline-DHT compatible implementation is available as plugin.
  12. ↑ µTorrent's DHT implementation is the same as Mainline and BitComet's, but unfortunately this is incompatible with Azureus's implementation.
  13. ↑ Since Shareaza v2.6.0.0, Shareaza includes Mainline DHT support. Also, Shareaza can use the Gnutella2 network to find other Gnutella2 clients sharing the same torrent. This also includes clients who do not actively seed the torrent in question anymore, as long as file hashes (such as sha1 for example) are known.
  14. ↑ Since Shareaza v2.5.5.1 r9064.
  15. ↑ Exchanges with µTorrent and Azureus peers.
  16. ↑ Since version 2.5.0.2. It's UDP based, an experimental feature and only supported by other Azureus clients.
  17. ↑ Reduces disk usage, file fragmentation (in case it is not preallocated) and latencies via larger written blocks and cached data for hash checking finished pieces.
  18. 1 2 3 4 5 6 7 8 Does not support HTTPS.
  19. ↑ Called "preview mode"
  20. 1 2 3 4 Does not support HTTP redirection (status codes: 301, 302, 303, 307).
  21. 1 2 Provides a Java-based and a simple HTML/JS based WebUI.
  22. ↑ From version 3.0 this feature is called "Streaming mode". The number of pieces to download sequentially is configurable
  23. ↑ Opera has a feed aggregator that displays feeds like emails.
  24. ↑ Since Shareaza v2.4.0.2 r7924.
  25. ↑ Since Shareaza v2.5.3.1.
  26. ↑ Shareaza also uses G2 to transmit download metadata, such as BitTorrent trackers to other G2 clients.
  27. ↑ Maximum active torrent number depends on respective user settings and is limited to 31.
  28. ↑ Support only base path ("url-list" path) redirection (message: "HTTP redirect does not match file path").
  29. ↑ Adds HTTP referer header in request on HTTP redirection (useful behavior).

Vulnerabilities

This comparison of unpatched publicly known vulnerabilities in latest stable version clients is based on vulnerabilities reports by SecurityFocus and Secunia. See computer security for more details about the importance of unpatched known flaws.

BitTorrent client Known unpatched vulnerabilities
Secunia SecurityFocus
Extremely critical
(number / oldest)		Highly critical
(number / oldest)		Moderately critical
(number / oldest)		Less critical
(number / oldest)		Not critical
(number / oldest)		Total
(number / oldest)
BitComet 0 0 0 0 0 0
BitLord 0 0 0 0 0 Unknown
BitTornado 0 0 0 0 0 Unknown
BitTorrent 0 0 0 0 0 0
BitTorrent DNA 0 0 0 0 0 0
BitTyrant 0 0 0 0 0 Unknown
Deluge 0 0 0 0 0 0
FlashGet 0 0 0 0 0 1
13 August 2008 (2008-08-13)
Free Download Manager 0 0 0 0 0 0
FrostWire 0 0 0 0 0 Unknown
KTorrent 0 0 0 0 0 0
Libtorrent (Rasterbar) 0 0 0 0 0 0
LimeWire 0 0 0 0 0 0
Miro 0 0 0 0 0 1
26 February 2008 (2008-02-26)
MLDonkey 0 0 0 0 1
5 November 2003 (2003-11-05)		 1
23 February 2009 (2009-02-23)
µTorrent for Mac 0 0 0 0 0 0
µTorrent for Windows 0 0 0 0 0 0
Opera 12 0 0 0 0 0 0
Shareaza 0 0 0 0 0 0
Tixati 0 0 0 0 0 Unknown
Tomato Torrent 0 0 0 0 0 Unknown
TorrentFlux 0 0 1
23 April 2008 (2008-04-23)		 0 0 2
18 April 2008 (2008-04-18)
Transmission 0 0 0 0 0 0
Vuze (formerly Azureus) 0 0 0 0 0 1
22 June 2006 (2006-06-22)
Wyzo 0 0 0 0 0 Unknown
Xunlei 0 2
28 September 2007 (2007-09-28)		 0 0 0 1
17 November 2007 (2007-11-17)
BitTorrent client Extremely critical
(number / oldest)		Highly critical
(number / oldest)		Moderately critical
(number / oldest)		Less critical
(number / oldest)		Not critical
(number / oldest)		Total
(number / oldest)
Secunia SecurityFocus
Known unpatched vulnerabilities

Libraries

General
BitTorrent library First public release date Latest stable Software license
libtorrent (Rasterbar) 8 September 2005[95] 1.1.4[96] (July 3, 2017 (2017-07-03)) [±] Free software
MonoTorrent September 2006 0.90 (May 22, 2010 (2010-05-22)) [±] Free software
rTorrent (libTorrent Rakshasa) 15 July 2004[97] rTorrent 0.9.6 / libTorrent 0.13.6 (September 3, 2015 (2015-09-03)) [±][98] Free software
WebTorrent 4 December 2013[99] WebTorrent 0.98.18 (April 14, 2017 (2017-04-14)) [±][100] Free software
BitTorrent library First public release date Latest stable Software license
Operating system support and programming language
BitTorrent library Linux/Unix Windows OS X API Programming language
libtorrent (Rasterbar) Yes Yes Yes Yes C++
MonoTorrent Yes Yes Yes Yes C#
rTorrent (libTorrent Rakshasa) Yes No Yes Yes C++
WebTorrent Yes Yes Yes Yes JavaScript
BitTorrent library Linux/Unix Windows OS X API Programming language
Supported features 1
BitTorrent library Super-seeding Tracker UPnP [Note 1] NAT Port Mapping Protocol NAT traversal [Note 2] DHT [Note 3] Peer exchange Encryption UDP tracker LPD Fast extensions Magnet URI µTP
libtorrent (Rasterbar) Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes[101] Yes Yes Yes[102]
MonoTorrent Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes No
rTorrent (libTorrent Rakshasa) Yes Yes No ? ? Yes Yes Yes Yes ? No YesNo
WebTorrent No Yes No No Yes Yes Yes Yes Yes No ? Yes No
BitTorrent library Super-seeding Tracker UPnP NAT Port Mapping Protocol NAT traversal DHT Peer exchange Encryption UDP tracker LPD Fast extensions Magnet URI µTP
Supported features 2
BitTorrent library Cache[Note 4] Web seeding [Note 5] Broadcatching (RSS) Prioritization Selective downloads SOCKS Remote control via web Engine Notes
libtorrent (Rasterbar) Yes Yes Yes Yes Yes Yes Yes ?
MonoTorrent Yes Yes Yes Yes Yes No Yes No
rTorrent (libTorrent Rakshasa) Partial No No Yes Yes No Yes No No built-in cache-disk cache but a delayed sync
WebTorrent Yes Yes No Yes Yes No No No Works in Node.js and the web browser
BitTorrent library Cache Web seeding Broadcatching (RSS) Prioritization Selective downloads SOCKS Remote control via web Engine Notes

Notes

  1. ↑ Automatically configure port forwarding (requires Router with UPnP support)
  2. ↑ Many clients claim to support this, but just UPnP calls for opening a TCP port is not effective and disabled by factory default in most new hardware. "UDP NAT Traversal" is the proper working solution, supported by just a few.
  3. ↑ DHT permits use of trackerless torrents (with supporting clients) to resume normal torrents when their tracker is down. However, some trackers that register their users for keeping tabs on fair usage (such as a ratio of bytes downloaded to uploaded) may not reliably measure and update usage for users employing DHT.
  4. ↑ Reduces disk usage, file fragmentation (in case it is not preallocated) and latencies due to larger written blocks and cached data for hash checking finished pieces.
  5. ↑ Recently implemented (unofficial) web seeding feature, see HTTP-Based Seeding Specification

See also

References

  1. 1 2 "Glossary". BitTorrent User Manual. San Francisco: BitTorrent, Inc. Retrieved 2 July 2013.
  2. ↑ Cohen, Bram (2 July 2001). "BitTorrent – a new P2P app". Decentralization · Implications of the end-to-end principle. Yahoo! Groups. Retrieved 2 July 2013.
  3. ↑ Van Der Sar, Ernesto (14 October 2013). "Google-backed BitTorrent client spread malware to Windows PCs and Android devices". TorrentFreak. Retrieved 19 November 2013.
  4. ↑ Gibbs, Samuel (15 October 2013). "Google-Backed File-Sharing Service Spreads Malware". The Guardian. Guardian News and Media. Retrieved 19 November 2013.
  5. ↑ "ABC (Yet Another Bittorrent Client)". SourceForge. ABC. 2005-10-03. Retrieved 2010-01-21.
  6. ↑ "BitComet Client Release Notes - A free C++ BitTorrent/HTTP/FTP Download Client". www.bitcomet.com. 2010-08-31. Retrieved 2016-11-14.
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  61. ↑ "Transmission 2.30".
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