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TenFourFox is a web browser based on Mozilla's Gecko layout engine. It is a port of Mozilla Firefox for PowerPC-based Macintosh computers running Mac OS X to retain compatibility with the older architecture and older versions of the operating system, and to add PowerPC-specific optimizations for improved performance. The project was started after Mozilla announced that it would not release Firefox 4 for PowerPC versions of OS X. Like Firefox, it includes compatibility with a wide range of addons, Acid2 and Acid3 compliance, and HTML 5 and CSS 3 features; however, it also includes JavaScript just-in-time compilation,〔(【引用サイトリンク】 url=http://code.google.com/p/tenfourfox/wiki/TechnicalDifferences )〕〔(【引用サイトリンク】 url=http://ppcluddite.blogspot.com/2011/04/tenfourfox-final-vs-beta-12.html )〕〔(【引用サイトリンク】 url=http://lyncd.com/2011/04/firefox-4-ppc-mac-tenfourfox/ )〕 custom builds for specific PowerPC processor families,〔(【引用サイトリンク】 url=http://code.google.com/p/tenfourfox/wiki/WhichVersion )〕〔(【引用サイトリンク】 url=http://www.lowendmac.com/misc/11mr/tenfourfox.html )〕 and AltiVec acceleration of key media codecs.〔(【引用サイトリンク】 url=http://code.google.com/p/tenfourfox/issues/detail?id=28 )〕〔(【引用サイトリンク】 url=http://code.google.com/p/tenfourfox/issues/detail?id=51 )〕 The primary maintainer is Cameron Kaiser. The project shares administration with Classilla, a fork of Mozilla Application Suite for Mac OS 9 and Mac OS 8.6. ==History== In 2010, Mozilla's Mike Beltzner announced that the forthcoming Firefox 4 would not be released for Power Macintosh computers,〔(【引用サイトリンク】 url=http://groups.google.com/group/mozilla.dev.planning/browse_thread/thread/b780f28d41e47de3# )〕 compatibility with Mac OS X Tiger having already been removed,〔(【引用サイトリンク】 url=http://groups.google.com/group/mozilla.dev.planning/browse_thread/thread/7d3a647586bab993# )〕 making Firefox 3.6 the last supported release of Firefox on the older architecture and platform. Mozilla stopped making PowerPC-compatible universal builds of Firefox 4 with beta 7.〔(【引用サイトリンク】 url=https://wiki.mozilla.org/Releases/Firefox_4.0b7/BuildNotes )〕 In parallel, developer Cameron Kaiser created a test build of Firefox 4 that could run on his Power Mac G5 at the same time as support was being withdrawn from beta 7.〔(【引用サイトリンク】 url=http://www.floodgap.com/iv/1074 )〕 This was released to users in separate builds for AltiVec Macs and G3 Macs on November 8, 2010.〔(【引用サイトリンク】 url=http://code.google.com/p/tenfourfox/downloads/list )〕〔(【引用サイトリンク】 url=http://code.google.com/p/tenfourfox/wiki/ReleaseNotesBeta7 )〕 Aligning with previous precedent that modified builds of Firefox source could not use Firefox trademarks without permission, the project was forked and named ''TenFourFox''.〔(【引用サイトリンク】 url=http://68kmla.org/forums/viewtopic.php?f=29&t=14519 )〕 A full complement of builds for the G3, the 7400 and 7450 G4 families and the G5 were released with beta 8 on December 15, 2010.〔(【引用サイトリンク】 url=http://code.google.com/p/tenfourfox/downloads/list )〕〔(【引用サイトリンク】 url=http://tenfourfox.blogspot.com/2010/12/beta-8-now-available.html )〕〔(【引用サイトリンク】 url=http://code.google.com/p/tenfourfox/wiki/ReleaseNotesBeta8 )〕 JavaScript acceleration using its completed PowerPC version of TraceMonkey was released with beta 9 on January 12, 2011,〔(【引用サイトリンク】 url=http://code.google.com/p/tenfourfox/downloads/list )〕〔(【引用サイトリンク】 url=http://code.google.com/p/tenfourfox/wiki/ReleaseNotesBeta9 )〕 and enabled fully for beta 11 on February 2, 2011.〔(【引用サイトリンク】 url=http://code.google.com/p/tenfourfox/downloads/list )〕〔(【引用サイトリンク】 url=http://code.google.com/p/tenfourfox/wiki/ReleaseNotesBeta11 )〕 The finalized first release version, 4.0s, incorporated a security update and a fix for JavaScript performance,〔(【引用サイトリンク】 url=http://code.google.com/p/tenfourfox/wiki/ReleaseNotes40 )〕 and was released on March 24, 2011.〔(【引用サイトリンク】 url=http://code.google.com/p/tenfourfox/downloads/list )〕 Version 5.0 switched to the current Mozilla rapid release framework, based on Firefox 5 and including additional AltiVec scaling and color features,〔(【引用サイトリンク】 url=http://tenfourfox.blogspot.com/2011/06/tenfourfox-5-beta-2-released.html )〕 and was released on June 16, 2011.〔(【引用サイトリンク】 url=http://code.google.com/p/tenfourfox/downloads/list )〕 After Mozilla announced the extended support release (ESR) of Firefox, Cameron Kaiser stated that starting with version 10 of TenFourFox, stable releases of TenFourFox will be based on Firefox ESR to reduce maintenance burden. Between major ESR versions, developers track changes in Firefox's 6-week rapid release cycle with test builds only to determine whether or not they will still be able to build the software after the next ESR version is released. Only minor ESR updates are advertised as suitable for general consumption.〔(【引用サイトリンク】 url=http://tenfourfox.blogspot.com/2012/01/two-forks-diverged-in-wood-and-i-i-took.html )〕 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「TenFourFox」の詳細全文を読む スポンサード リンク
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