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BitTorrent Sync by BitTorrent, Inc is a proprietary peer-to-peer file synchronisation tool available for Windows, Mac, Linux, Android, iOS, Windows Phone, Amazon Kindle Fire and BSD. It can sync files between devices on a local network, or between remote devices over the Internet via a modified version of the BitTorrent protocol. Although not touted by the developers as an intended direct replacement nor competitor to cloud-based file synchronisation services, it has attained much of its publicity in this potential role.〔 This is mainly due to the ability of BitTorrent Sync to address many of the concerns in existing services relating to file storage limits, privacy, cost, and performance. == History == On 24 January 2013, BitTorrent, Inc announced a call for pre-alpha testers to help test a new "distributed syncing product to help manage personal files between multiple computers".〔(【引用サイトリンク】title=Test BitTorrent Sync Pre-Alpha )〕 Several private pre-alpha builds of "SyncApp" were subsequently made available to a limited group of alpha testers between January 2013 and April 2013. In mid-April 2013, the name "SyncApp" was dropped in favour of "BitTorrent Sync". On 23 April 2013, the previously private "alpha" was opened up to general users.〔(【引用サイトリンク】title=BitTorrent Sync challenges cloud-based file management )〕〔(【引用サイトリンク】title=BitTorrent Sync Alpha Now Open To All )〕〔(【引用サイトリンク】title=Forget online drives, sync directly with BitTorrent Sync )〕 As of 6 May 2013, more than a petabyte of anonymous data had been synced between users, with over 70 terabytes synced daily.〔(【引用サイトリンク】title=BitTorrent Sync Crosses One Petabyte Milestone )〕 As of 16 July 2013, more than eight petabytes of data had been synced using the software.〔(【引用サイトリンク】title=Behind the Scenes: The Making of BitTorrent Sync )〕 BitTorrent Sync migrated from "alpha" to "beta", released an Android app, and introduced versioning on 17 July 2013.〔(【引用サイトリンク】title=Now in Beta: BitTorrent Sync )〕 On 27 August 2013, BitTorrent Sync for iOS was announced.〔(【引用サイトリンク】title=BitTorrent Sync for iOS: Available Now )〕 On 5 November 2013, BitTorrent announced the release of BitTorrent Sync Beta API and version 1.2 of the client, along with the milestone, having over 1 million monthly active users synced over 30 petabytes of data to date.〔Protalinski, Emil. 5 November 2013 TheNextWeb. "(With over 1 million users and 30PB synced, BitTorrent speeds up Sync, adds iPad support, and debuts an API )"〕 As of 26 August 2014, there have been more than 10 million user installs and more than 80 petabytes of data synced between users.〔(【引用サイトリンク】title=Introducing BitTorrent Sync 1.4: An Easier Way to Share Large Files )〕 On 3 March 2015, the product finally exited beta as a commercial product, with the inclusion of a paid Pro version.〔(【引用サイトリンク】title=Sync 2.0: Skip The Cloud, Share Direct )〕 On 9 September 2015, with the release of Sync 2.2, in the free version, the 10 folder limit that had been introduced with 2.0, was removed. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「BitTorrent Sync」の詳細全文を読む スポンサード リンク
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