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embed in other applications". Firefox Focus 7.0, shipped in the same month, is the initial version introduced GeckoView, with increased performance in median page loading. Firefox
Reality was also built with GeckoView. In June 2019, Mozilla announced Firefox Preview as an ongoing project that focuses on building an Android web browser with GeckoView. Firefox for Android 79, also known as "Firefox Daylight", first shipping in August 2020, is the first stable release of that with major components powered by GeckoView engine.
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38:
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In
September 2018, Mozilla announced GeckoView, the foundation of Mozilla's next generation of mobile products based on a software library that makes Gecko reusable for Android, encompassing newer software development efforts to "decouple the engine itself from its user interface, and made it easy to
346:
In
October 1998, Netscape announced that its next browser would use Gecko (which was still called NGLayout at the time) rather than the old layout engine, requiring large parts of the application to be rewritten. While this decision was popular with web standards advocates, it was largely unpopular
315:
and lacked features such as incremental reflow (when the layout engine rearranges elements on the screen as new data is downloaded and added to the page). The new layout engine was developed in parallel with the old, with the intention being to integrate it into
Netscape Communicator when it was
1088:
moved to its own process, isolating browser tabs from graphics driver related crashes. Since compositor crashes will not bring down the browser content process, the compositor process can be restarted transparently without losing user data. This was released in
Firefox
1024:
As of April 2016, Servo needed at least several years of development to become a full-featured browser engine, hence the decision to start the
Quantum project to bring stable portions of Servo into Firefox. Mozilla laid off all Servo developers in August 2020.
962:
After Gecko 2.0, the version number was bumped to 5.0 to match
Firefox 5, and from then on has been kept in sync with the major version number for both Firefox and Thunderbird, to reflect the fact that it is no longer a separate component.
1145:, Gecko's networking layer, by moving more network activity off the main thread, context dependent prioritization of networking streams, and racing the cache layer with the network. This feature was released in Firefox 59.
427:
project. Firefox 57, also known as "Firefox
Quantum", first shipping in November 2017, is the initial version with major components from the Quantum/Servo projects enabled. These include increased performance in the
377:
On July 15, 2003, AOL laid off the remaining Gecko developers and the
Mozilla Foundation (formed on the same day) became the main steward of Gecko development. Today, Gecko is developed by employees of the
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improvements to the old layout engine) had to be abandoned. Netscape 6, the first
Netscape release to incorporate Gecko, was released in November 2000 (the name Netscape 5 was never used).
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Firefox 57, released in November 2017, is the initial version with a Servo component enabled. Mozilla dubs this and several planned future releases "Firefox Quantum".
1324:
1113:: An umbrella for user visible performance improvements driven by a team that works across Gecko components. Focused on real user performance improvements on major
1078:. Worst-case scenario rendering in testing exceeds 60 frames per second. Mozilla began enabling the new renderer for select hardware/OS combinations in Firefox 67.
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refresh of the entire application, with a strong focus on improving UI performance. Treated as a sister project to Quantum Flow. This was released in Firefox 57.
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After the launch of the Mozilla project in early 1998, the new layout engine code was released under an open-source license. Originally unveiled as
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mature and stable. At least one more major revision of Netscape was expected to be released with the old layout engine before the switch.
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browser. However, by 2008 Mozilla had addressed some of the bloat problems, resulting in significant performance improvements for Gecko.
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to increase responsiveness without increasing the number of processes and, thus, memory usage. The core of this shipped in Firefox 57.
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with Netscape developers, who were unhappy with the six months given for the rewrite. It also meant that most of the work done for
2205:"Firefox faster and more stable with the first big bytes of Project Quantum, simpler with compact themes and permissions redesign"
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7.0 and AOL for Mac OS X (these products had previously embedded Internet Explorer). However, with the exception of a few
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343:) initially continued to use the NGLayout name (Gecko was a Netscape trademark), eventually the Gecko branding won out.
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From the outset, Gecko was designed to support open Internet standards. Some of the standards Gecko supports include:
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Azure will provide 2D hardware acceleration on top of 3D graphics backends. Firefox began using Azure instead of
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rendering components. Additional components will be merged from Servo to Gecko incrementally in future versions.
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1.0 and upgraded through the years, was slow, did not comply well with W3C standards, had limited support for
1737:"Fast, personalized and private by design on all platforms: introducing a new Firefox for Android experience"
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switching. Documents with a modern DOCTYPE are rendered in standards compliance mode, which follows the
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User Interface Language). Gecko currently defines the XUL specification. Gecko is also used by the
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system integrated into Gecko. Benchmarks suggest that performance scales linearly with number of
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In the Netscape era, a combination of poor technical and management decisions resulted in Gecko
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users". It includes numerous improvements to Gecko, largely incorporated from the experimental
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Gecko also has limited support for some non-standard Internet Explorer features, such as the
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that makes it suitable for a wide variety of roles in Internet-enabled applications, such as
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As Gecko development continued, other applications and embedders began to make use of it.
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1810:"Mozilla Adds Undetectable document.all Support, Part of New Novell Linux Distribution?"
1809:
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Please help update this article to reflect recent events or newly available information.
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3221:. Some projects abandoned by Mozilla that are still maintained by third parties are in
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standards strictly. Documents that have no DOCTYPE or an older DOCTYPE are rendered in
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code with better memory safety, concurrency, and parallelism than compiled C++ code.
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project. Quantum also includes refinements to the user interface and interactions.
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382:, employees of companies that contribute to the Mozilla project, and volunteers.
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users". It included numerous improvements to Gecko, taken from the experimental
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designed for legacy versions of Netscape and Internet Explorer, Gecko supports
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architecture, called WebRender, integrated into Gecko. WebRender replaces the
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362:, by this time Netscape's parent company, eventually adopted it for use in
2108:"Mozilla lays off 250 employees while it refocuses on commercial products"
1685:"What's new in Firefox Focus for Android (version 7) | Firefox Focus Help"
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On Windows and other platforms, Gecko depends on proprietary compilers.
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2445:"Firefox Now Uses the Azure Graphics API for Canvas on All Platforms"
1762:"Cross Browser Compatibility of ECMAScript 2015 (ES6) in Firefox 102"
1630:"Firefox Focus 7.0 enters beta, Switches to GeckoView (Gecko Engine)"
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engine, Quantum DOM uses cooperatively scheduled threads within the
782:). It is also used in other Mozilla web browser derivatives such as
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1786:"Cross Browser Compatibility of SVG (basic support) in Firefox 102"
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Proceedings of the International Conference on Software Engineering
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2060:"Introducing the New Firefox: Firefox Quantum – The Mozilla Blog"
307:. The existing Netscape rendering engine, originally written for
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1551:"Why Mozilla is committed to Gecko as WebKit popularity grows"
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1606:"Mozilla Announces Quantum, a New Browser Engine for Firefox"
1095:: Loosely inspired by Servo's Constellation architecture and
299:
Development of the layout engine now known as Gecko began at
2003:"Not much in new Thunderbird 5, but roadmap looks promising"
1457:"Ars Technica sits down with Scott Collins from Mozilla.org"
860:
mobile operating system, which is based on the discontinued
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1905:"KaiOS Technologies partners with Mozilla to improve Gecko"
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improved control over performance characteristics and bugs.
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computer, and is used as a complete implementation of the
3664:
Netscape Server Application Programming Interface (NSAPI)
3591:
Netscape Plugin Application Programming Interface (NPAPI)
1194:. The Azure name is an ode to the early Netscape founder
1033:
The Quantum project is composed of several sub-projects.
1017:, also created by Mozilla, which is designed to generate
2033:"Firefox 57.0, See All New Features, Updates and Fixes"
1653:
1651:
735:, which emulates some of the non-standard oddities of
2459:"Azure Replacing Cairo In Mozilla Firefox - Phoronix"
1314:"Engineering the Servo Web Browser Engine using Rust"
982:
efforts to "build the next-generation web engine for
419:
efforts to "build the next-generation web engine for
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1361:"Mozilla binds Firefox's fate to the Rust language"
228:, and is used by different applications to display
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146:
128:
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69:
44:
1219:"Mozilla Foundation End-User Licensing Agreements"
1202:where workstations were often named after colors.
275:version 2. Mozilla officially supports its use on
2054:
2052:
1125:. This work completed and shipped for Firefox 57.
1074:by taking advantage of CSS/DOM's similarity to a
1879:"One Laptop Per Child readies 'Sugar' interface"
1599:
1597:
739:4.x; however, some of the 4.x features (such as
1276:
1274:
331:problems. Netscape later rebranded NGLayout as
1297:Gecko is implemented using C++ and JavaScript.
1168:The project has several objectives including:
899:Discontinued products that used Gecko include
754:property (though pages explicitly testing for
3978:
3828:
3483:
2578:
1307:
1305:
1070:model that is more easily accelerated by the
612:
303:in 1997, following the company's purchase of
8:
2474:"Parallel page rendering with Mozilla Servo"
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2499:"Introducing the Azure project - JOEDREW!"
2027:
2025:
1013:vulnerabilities. Servo is written in the
872:Products that formerly used Gecko include
619:
605:
483:
415:, an ongoing project encompassing several
117:
29:
2536:Mozilla Product Strategy Proposal (DRAFT)
2531:Gecko development wiki (wiki.mozilla.org)
2332:"Quantum Flow Engineering Newsletter #25"
1972:"Gecko versions and application versions"
1312:Bergstrom, Lars; et al. (May 2016).
1001:In 2012, Mozilla began the experimental
1210:
1052:cores. This was released in Firefox 57.
805:Other web browsers using Gecko include
567:
495:
1359:Yegulalp, Serdar (February 3, 2017).
1175:optimized state interoperability, and
1172:more accurate Direct2D compatibility,
232:and, in some cases, an application's
7:
2157:"Bay Area Rust Meetup February 2016"
5155:Software that uses Cairo (graphics)
1812:. Developer.mozilla.org. 2004-07-23
1632:. 14 September 2018. Archived from
1428:"nglayout project: identity crisis"
758:will be told it is not supported).
411:In October 2016, Mozilla announced
370:, Gecko was never used in the main
263:, and, since 2016, additionally in
240:). Gecko offers a rich programming
2430:"Platform/GFX/Moz2D - MozillaWiki"
2382:"TPE Necko/Projects - MozillaWiki"
2358:"Photon Engineering Newsletter #1"
1881:. IDG News Service. Archived from
1282:"Simple Firefox for Android build"
25:
1158:project is a stateless low-level
5140:Free software programmed in Rust
3448:Debian–Mozilla trademark dispute
1527:. self-published. Archived from
1330:from the original on 2016-05-29.
1117:, primarily G Suite (now called
798:. Mozilla also uses it in their
487:
452:
327:(next generation layout) due to
323:, the name had to be changed to
36:
5135:Free software programmed in C++
2472:Willis, Nathan (17 June 2015).
2239:from the original on 2021-12-11
3607:Netscape Mail & Newsgroups
1954:"Building Firefox for Windows"
1735:Vesta Zare (August 25, 2020).
1659:"Firefox Focus with GeckoView"
1455:Jorge O. Castro (2004-06-15).
790:and the implementation of the
715:Legacy IE non-standard support
351:(including development on the
27:Open-source HTML layout engine
1:
3217:Discontinued projects are in
2541:Web Browser Standards Support
1877:Martens, China (2007-01-03).
1430:. Mozilla.org. Archived from
1141:: Improve the performance of
978:project encompassing several
703:, implemented in TransforMiiX
509:Firefox early version history
269:free and open-source software
221:Gecko is designed to support
1237:"Mozilla Licensing Policies"
412:
271:subject to the terms of the
248:, content presentation, and
3649:Netscape Application Server
2258:"Mozilla's Quantum Project"
1488:"Apple snub stings Mozilla"
1007:concurrency and parallelism
766:Gecko is primarily used in
681:(via an official extension)
662:2021 ES12), implemented in
658:ES6 or superior, currently
397:, not Gecko, to create the
218:, and many other projects.
5171:
3644:Netscape Enterprise Server
2406:"Firefox 59 Release Notes"
2283:"Entering the Quantum Era"
1831:"IE Uses Gecko Under Wine"
1519:David Baron (2003-01-09).
1186:in 2012. It is written in
880:), Epiphany (now known as
5084:
5008:Internet Explorer for Mac
4570:
4559:
4187:
4176:
4021:
4000:
3659:Netscape Directory Server
3414:
3403:
3376:
3365:
3249:
3238:
3215:
2905:Mozilla Application Suite
2611:
2600:
1903:Hill, Paul (2020-03-12).
1260:. Mozilla.org. 2012-10-25
1015:Rust programming language
461:This section needs to be
349:Netscape Communicator 5.0
199:(stylized as ɢecko) is a
91:
65:
35:
2775:Mozilla Location Service
1857:Free Software Foundation
1851:sdubois (24 June 2010).
1549:Ryan Paul (2008-09-09).
1198:and his earlier work at
800:Thunderbird email-client
76:125 / 4 November 2022
61:, and other contributors
5125:Cross-platform software
3787:Netscape Public License
2926:Netscape Communications
794:-clone that is part of
504:Firefox version history
339:(the forerunner of the
78:; 22 months ago
3690:Open Directory Project
3438:Mozilla Public License
2084:"Servo remaining work"
1929:"Picasa 3.0 for Linux"
955:Proprietary dependency
840:Gecko is also used by
273:Mozilla Public License
3654:Netscape Proxy Server
3547:Netscape Communicator
2919:Netscape Communicator
2811:Early version history
2356:dolske (2017-05-18).
2262:Bill McCloskey's Blog
1521:"Thursday 2003-01-09"
1066:drawing model with a
770:, the earliest being
743:) are not supported.
737:Netscape Communicator
236:itself (by rendering
5145:Gecko-based software
4993:IBM Home Page Reader
3612:Netscape Messenger 9
3586:Netscape Navigator 9
2526:Gecko - MDN Web Docs
2229:"Servo Architecture"
1665:. September 13, 2018
1525:David Baron's weblog
1160:graphics abstraction
1009:while also reducing
980:software development
719:In order to support
707:Gecko also supports
417:software development
337:Mozilla Organization
255:Gecko is written in
207:. It is used in the
5130:Free layout engines
3425:The Book of Mozilla
3280:Official affiliates
3266:Mozilla Corporation
2933:Beonex Communicator
2235:. 18 January 2017.
1710:"GeckoView in 2019"
1689:support.mozilla.org
1258:"Embedding Mozilla"
1084:: Gecko's existing
921:Beonex Communicator
568:Origins and lineage
546:Features of Firefox
380:Mozilla Corporation
55:Mozilla Corporation
32:
3581:Netscape Browser 8
3520:Netscape Navigator
3261:Mozilla Foundation
2912:Netscape Navigator
2551:2005-10-24 at the
2138:. 18 November 2016
1790:www.lambdatest.com
1766:www.lambdatest.com
1604:Cimpanu, Catalin.
933:Sunbird (calendar)
788:Firefox for mobile
581:Mozilla Foundation
576:Netscape Navigator
341:Mozilla Foundation
309:Netscape Navigator
226:Internet standards
51:Mozilla Foundation
18:Quantum (software)
5107:
5106:
5080:
5079:
5076:
5075:
4763:Internet Explorer
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3959:
3810:
3809:
3628:Netscape Composer
3465:
3464:
3461:
3460:
3419:Mozilla Manifesto
3399:
3398:
3361:
3360:
3357:
3356:
3271:Mozilla Messaging
3234:
3233:
3230:
3229:
3116:
3115:
2443:Parfeni, Lucian.
2181:"Webrender Where"
1346:groups.google.com
792:Internet Explorer
629:
628:
482:
481:
444:Standards support
372:Microsoft Windows
194:
193:
16:(Redirected from
5162:
4572:
4561:
4287:Samsung Internet
4189:
4178:
4023:
4002:
3987:
3980:
3973:
3964:
3858:
3837:
3830:
3823:
3814:
3621:Other components
3508:Browser versions
3501:
3492:
3485:
3478:
3469:
3405:
3367:
3251:
3240:
3181:Portable Edition
3049:Calendar Project
2868:Firefox Lockwise
2796:
2790:List of products
2613:
2602:
2587:
2580:
2573:
2564:
2514:
2513:
2511:
2510:
2501:. Archived from
2495:
2489:
2488:
2486:
2484:
2469:
2463:
2462:
2455:
2449:
2448:
2440:
2434:
2433:
2426:
2420:
2419:
2417:
2416:
2402:
2396:
2395:
2393:
2392:
2386:wiki.mozilla.org
2378:
2372:
2371:
2369:
2368:
2353:
2347:
2346:
2344:
2343:
2336:ehsanakhgari.org
2328:
2322:
2321:
2319:
2318:
2304:
2298:
2297:
2295:
2294:
2279:
2273:
2272:
2270:
2269:
2254:
2248:
2247:
2245:
2244:
2225:
2219:
2218:
2216:
2215:
2201:
2195:
2194:
2192:
2191:
2177:
2171:
2170:
2168:
2167:
2153:
2147:
2146:
2144:
2143:
2128:
2122:
2121:
2119:
2118:
2104:
2098:
2097:
2095:
2094:
2080:
2074:
2073:
2071:
2070:
2064:The Mozilla Blog
2056:
2047:
2046:
2044:
2043:
2029:
2020:
2019:
2017:
2016:
1999:
1993:
1992:
1990:
1989:
1980:. Archived from
1968:
1962:
1961:
1950:
1944:
1943:
1941:
1940:
1931:. Archived from
1925:
1919:
1918:
1916:
1915:
1900:
1894:
1893:
1891:
1890:
1874:
1868:
1867:
1865:
1863:
1848:
1842:
1841:
1839:
1838:
1827:
1821:
1820:
1818:
1817:
1806:
1800:
1799:
1797:
1796:
1782:
1776:
1775:
1773:
1772:
1758:
1752:
1751:
1749:
1747:
1732:
1726:
1725:
1723:
1721:
1706:
1700:
1699:
1697:
1695:
1681:
1675:
1674:
1672:
1670:
1655:
1646:
1645:
1643:
1641:
1626:
1620:
1619:
1617:
1616:
1601:
1592:
1591:
1589:
1588:
1574:
1561:
1560:
1558:
1557:
1546:
1540:
1539:
1537:
1536:
1516:
1507:
1506:
1504:
1503:
1494:. Archived from
1480:
1471:
1470:
1468:
1467:
1452:
1443:
1442:
1440:
1439:
1424:
1418:
1417:
1415:
1414:
1405:. Archived from
1395:
1389:
1388:
1386:
1385:
1375:
1369:
1368:
1356:
1350:
1349:
1338:
1332:
1331:
1329:
1318:
1309:
1300:
1299:
1294:
1293:
1284:. Archived from
1278:
1269:
1268:
1266:
1265:
1254:
1248:
1247:
1245:
1244:
1233:
1227:
1226:
1215:
1200:Silicon Graphics
1119:Google Workspace
823:Portable Firefox
757:
753:
621:
614:
607:
496:Related articles
491:
484:
477:
474:
468:
456:
455:
448:
190:
187:
185:
183:
181:
179:
177:
121:
116:
113:
112:/mozilla-central
111:
109:
107:
86:
84:
79:
40:
33:
21:
5170:
5169:
5165:
5164:
5163:
5161:
5160:
5159:
5110:
5109:
5108:
5103:
5072:
4998:IBM WebExplorer
4911:
4807:
4748:
4624:
4566:
4547:
4496:
4452:
4418:
4336:
4183:
4164:
4114:
4047:
4017:
3996:
3991:
3961:
3956:
3925:
3884:
3852:
3846:
3844:Browser engines
3841:
3811:
3806:
3755:
3741:Marc Andreessen
3699:
3668:
3637:Server software
3632:
3616:
3595:
3515:Mosaic Netscape
3503:
3499:
3496:
3466:
3457:
3410:
3395:
3372:
3353:
3344:Johnny Stenbäck
3302:
3275:
3245:
3226:
3211:
3112:
3036:
3015:
2969:
2938:
2892:
2873:Firefox Monitor
2851:Version history
2806:Firefox Browser
2794:
2767:
2761:
2701:
2695:
2617:
2607:
2596:
2591:
2553:Wayback Machine
2522:
2517:
2508:
2506:
2497:
2496:
2492:
2482:
2480:
2471:
2470:
2466:
2457:
2456:
2452:
2442:
2441:
2437:
2428:
2427:
2423:
2414:
2412:
2410:www.mozilla.org
2404:
2403:
2399:
2390:
2388:
2380:
2379:
2375:
2366:
2364:
2355:
2354:
2350:
2341:
2339:
2330:
2329:
2325:
2316:
2314:
2306:
2305:
2301:
2292:
2290:
2281:
2280:
2276:
2267:
2265:
2256:
2255:
2251:
2242:
2240:
2227:
2226:
2222:
2213:
2211:
2203:
2202:
2198:
2189:
2187:
2179:
2178:
2174:
2165:
2163:
2155:
2154:
2150:
2141:
2139:
2132:"The Changelog"
2130:
2129:
2125:
2116:
2114:
2106:
2105:
2101:
2092:
2090:
2082:
2081:
2077:
2068:
2066:
2058:
2057:
2050:
2041:
2039:
2031:
2030:
2023:
2014:
2012:
2001:
2000:
1996:
1987:
1985:
1970:
1969:
1965:
1952:
1951:
1947:
1938:
1936:
1927:
1926:
1922:
1913:
1911:
1902:
1901:
1897:
1888:
1886:
1876:
1875:
1871:
1861:
1859:
1850:
1849:
1845:
1836:
1834:
1829:
1828:
1824:
1815:
1813:
1808:
1807:
1803:
1794:
1792:
1784:
1783:
1779:
1770:
1768:
1760:
1759:
1755:
1745:
1743:
1734:
1733:
1729:
1719:
1717:
1716:. June 27, 2019
1708:
1707:
1703:
1693:
1691:
1683:
1682:
1678:
1668:
1666:
1657:
1656:
1649:
1639:
1637:
1636:on 31 July 2020
1628:
1627:
1623:
1614:
1612:
1603:
1602:
1595:
1586:
1584:
1576:
1575:
1564:
1555:
1553:
1548:
1547:
1543:
1534:
1532:
1518:
1517:
1510:
1501:
1499:
1482:
1481:
1474:
1465:
1463:
1454:
1453:
1446:
1437:
1435:
1426:
1425:
1421:
1412:
1410:
1397:
1396:
1392:
1383:
1381:
1379:"MPL 2 Upgrade"
1377:
1376:
1372:
1358:
1357:
1353:
1342:"Google Groups"
1340:
1339:
1335:
1327:
1316:
1311:
1310:
1303:
1291:
1289:
1280:
1279:
1272:
1263:
1261:
1256:
1255:
1251:
1242:
1240:
1235:
1234:
1230:
1217:
1216:
1212:
1208:
1167:
1152:
1031:
999:
969:
957:
870:
778:(later renamed
764:
755:
751:
748:marquee element
717:
625:
536:
478:
472:
469:
466:
457:
453:
446:
389:. Thus in 2001
297:
174:
124:
104:
87:
83:4 November 2022
82:
80:
77:
28:
23:
22:
15:
12:
11:
5:
5168:
5166:
5158:
5157:
5152:
5147:
5142:
5137:
5132:
5127:
5122:
5112:
5111:
5105:
5104:
5102:
5101:
5096:
5091:
5085:
5082:
5081:
5078:
5077:
5074:
5073:
5071:
5070:
5065:
5060:
5055:
5050:
5045:
5040:
5035:
5030:
5025:
5020:
5015:
5010:
5005:
5000:
4995:
4990:
4985:
4980:
4975:
4970:
4965:
4960:
4955:
4950:
4945:
4940:
4935:
4930:
4925:
4919:
4917:
4913:
4912:
4910:
4909:
4904:
4899:
4894:
4889:
4884:
4879:
4874:
4869:
4864:
4859:
4854:
4849:
4844:
4839:
4834:
4829:
4824:
4818:
4816:
4809:
4808:
4806:
4805:
4800:
4795:
4790:
4785:
4780:
4775:
4770:
4765:
4759:
4757:
4750:
4749:
4747:
4746:
4741:
4736:
4731:
4726:
4721:
4716:
4711:
4706:
4701:
4696:
4691:
4686:
4681:
4676:
4671:
4666:
4661:
4656:
4651:
4646:
4641:
4635:
4633:
4626:
4625:
4623:
4622:
4617:
4612:
4607:
4602:
4597:
4592:
4587:
4581:
4579:
4568:
4567:
4564:
4557:
4556:
4553:
4552:
4549:
4548:
4546:
4545:
4540:
4535:
4530:
4525:
4520:
4515:
4510:
4504:
4502:
4498:
4497:
4495:
4494:
4489:
4484:
4479:
4474:
4469:
4463:
4461:
4454:
4453:
4451:
4450:
4445:
4440:
4435:
4429:
4427:
4420:
4419:
4417:
4416:
4415:
4414:
4409:
4404:
4399:
4394:
4383:
4378:
4373:
4368:
4363:
4358:
4353:
4347:
4345:
4338:
4337:
4335:
4334:
4329:
4324:
4319:
4314:
4309:
4304:
4299:
4294:
4289:
4284:
4279:
4274:
4269:
4259:
4257:Microsoft Edge
4254:
4249:
4244:
4239:
4234:
4229:
4224:
4219:
4214:
4209:
4204:
4198:
4196:
4185:
4184:
4181:
4174:
4173:
4170:
4169:
4166:
4165:
4163:
4162:
4157:
4152:
4147:
4146:
4145:
4144:
4143:
4133:
4122:
4120:
4116:
4115:
4113:
4112:
4111:
4110:
4105:
4100:
4095:
4090:
4080:
4075:
4070:
4069:
4068:
4057:
4055:
4049:
4048:
4046:
4045:
4040:
4035:
4029:
4027:
4019:
4018:
4016:
4015:
4012:
4009:
4005:
3998:
3997:
3992:
3990:
3989:
3982:
3975:
3967:
3958:
3957:
3955:
3954:
3949:
3944:
3939:
3933:
3931:
3927:
3926:
3924:
3923:
3918:
3913:
3908:
3903:
3898:
3892:
3890:
3886:
3885:
3883:
3882:
3877:
3872:
3867:
3861:
3859:
3848:
3847:
3842:
3840:
3839:
3832:
3825:
3817:
3808:
3807:
3805:
3804:
3799:
3794:
3789:
3784:
3779:
3774:
3769:
3763:
3761:
3757:
3756:
3754:
3753:
3751:Mitchell Baker
3748:
3743:
3738:
3733:
3731:Jamie Zawinski
3728:
3726:Daniel Glazman
3723:
3718:
3716:James H. Clark
3713:
3707:
3705:
3701:
3700:
3698:
3697:
3692:
3687:
3682:
3676:
3674:
3670:
3669:
3667:
3666:
3661:
3656:
3651:
3646:
3640:
3638:
3634:
3633:
3631:
3630:
3624:
3622:
3618:
3617:
3615:
3614:
3609:
3603:
3601:
3600:E-mail clients
3597:
3596:
3594:
3593:
3588:
3583:
3578:
3577:
3576:
3571:
3561:
3560:
3559:
3554:
3544:
3543:
3542:
3537:
3532:
3527:
3517:
3511:
3509:
3505:
3504:
3497:
3495:
3494:
3487:
3480:
3472:
3463:
3462:
3459:
3458:
3456:
3455:
3450:
3445:
3440:
3435:
3428:
3421:
3415:
3412:
3411:
3408:
3401:
3400:
3397:
3396:
3394:
3393:
3388:
3383:
3377:
3374:
3373:
3370:
3363:
3362:
3359:
3358:
3355:
3354:
3352:
3351:
3346:
3341:
3336:
3331:
3329:Laura Chambers
3326:
3321:
3316:
3314:Mitchell Baker
3310:
3308:
3304:
3303:
3301:
3300:
3295:
3292:Mozilla Europe
3289:
3283:
3281:
3277:
3276:
3274:
3273:
3268:
3263:
3257:
3255:
3247:
3246:
3243:
3236:
3235:
3232:
3231:
3228:
3227:
3216:
3213:
3212:
3210:
3209:
3202:
3197:
3190:
3183:
3178:
3173:
3166:
3159:
3154:
3149:
3144:
3137:
3130:
3124:
3122:
3118:
3117:
3114:
3113:
3111:
3110:
3109:
3108:
3101:
3094:
3087:
3073:
3066:
3059:
3052:
3044:
3042:
3038:
3037:
3035:
3034:
3029:
3023:
3021:
3017:
3016:
3014:
3013:
3010:
3003:
2998:
2993:
2988:
2983:
2977:
2975:
2971:
2970:
2968:
2967:
2962:
2957:
2952:
2946:
2944:
2940:
2939:
2937:
2936:
2929:
2922:
2915:
2908:
2900:
2898:
2894:
2893:
2891:
2890:
2885:
2880:
2875:
2870:
2865:
2864:
2863:
2858:
2853:
2848:
2841:
2834:
2827:
2820:
2813:
2802:
2800:
2793:
2792:
2787:
2782:
2777:
2771:
2769:
2763:
2762:
2760:
2759:
2752:
2745:
2738:
2731:
2726:
2721:
2716:
2711:
2705:
2703:
2697:
2696:
2694:
2693:
2686:
2681:
2674:
2667:
2660:
2653:
2646:
2639:
2632:
2627:
2621:
2619:
2609:
2608:
2605:
2598:
2597:
2592:
2590:
2589:
2582:
2575:
2567:
2561:
2560:
2559:API for Gecko)
2543:
2538:
2533:
2528:
2521:
2520:External links
2518:
2516:
2515:
2490:
2464:
2450:
2435:
2421:
2397:
2373:
2348:
2323:
2308:"Quantum Flow"
2299:
2274:
2249:
2220:
2196:
2172:
2148:
2123:
2099:
2075:
2048:
2021:
2011:. 30 June 2011
1994:
1963:
1945:
1920:
1895:
1869:
1843:
1822:
1801:
1777:
1753:
1727:
1701:
1676:
1647:
1621:
1593:
1562:
1541:
1508:
1486:(2003-01-14).
1472:
1444:
1419:
1390:
1370:
1351:
1333:
1301:
1270:
1249:
1228:
1209:
1207:
1204:
1196:James H. Clark
1180:
1179:
1176:
1173:
1151:
1148:
1147:
1146:
1136:
1126:
1108:
1090:
1079:
1064:immediate mode
1053:
1030:
1027:
998:
995:
968:
965:
956:
953:
869:
866:
763:
760:
716:
713:
705:
704:
694:
688:
682:
676:
671:
666:
649:
644:
639:
627:
626:
624:
623:
616:
609:
601:
598:
597:
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590:
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588:
583:
578:
570:
569:
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564:
563:
562:
557:
552:
547:
544:
543:
542:
537:
535:
534:
529:
524:
518:
516:
511:
498:
497:
493:
492:
480:
479:
460:
458:
451:
445:
442:
393:chose to fork
387:software bloat
360:America Online
296:
293:
234:user interface
201:browser engine
192:
191:
172:
168:
167:
162:
156:
155:
153:Browser engine
150:
144:
143:
130:
126:
125:
123:
122:
101:
99:
93:
92:
89:
88:
75:
73:
71:Stable release
67:
66:
63:
62:
48:
42:
41:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
5167:
5156:
5153:
5151:
5148:
5146:
5143:
5141:
5138:
5136:
5133:
5131:
5128:
5126:
5123:
5121:
5118:
5117:
5115:
5100:
5097:
5095:
5092:
5090:
5087:
5086:
5083:
5069:
5066:
5064:
5061:
5059:
5056:
5054:
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4857:Nokia Symbian
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4709:PirateBrowser
4707:
4705:
4704:Mozilla suite
4702:
4700:
4697:
4695:
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4208:
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4202:Google Chrome
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4053:Web standards
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4034:
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4010:
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3752:
3749:
3747:
3746:Eric A. Meyer
3744:
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3686:
3685:Propeller.com
3683:
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3330:
3327:
3325:
3322:
3320:
3317:
3315:
3312:
3311:
3309:
3305:
3299:
3298:Mozilla Japan
3296:
3293:
3290:
3288:
3287:Mozilla China
3285:
3284:
3282:
3278:
3272:
3269:
3267:
3264:
3262:
3259:
3258:
3256:
3252:
3248:
3241:
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3214:
3208:
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3201:
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3119:
3107:
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3030:
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3025:
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3022:
3018:
3011:
3009:
3008:
3004:
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2999:
2997:
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2989:
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2651:
2647:
2645:
2644:
2640:
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2628:
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2623:
2622:
2620:
2614:
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2603:
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2574:
2569:
2568:
2565:
2558:
2554:
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2547:
2544:
2542:
2539:
2537:
2534:
2532:
2529:
2527:
2524:
2523:
2519:
2505:on 2016-09-08
2504:
2500:
2494:
2491:
2479:
2475:
2468:
2465:
2460:
2454:
2451:
2446:
2439:
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2431:
2425:
2422:
2411:
2407:
2401:
2398:
2387:
2383:
2377:
2374:
2363:
2362:Dolske's blog
2359:
2352:
2349:
2337:
2333:
2327:
2324:
2313:
2309:
2303:
2300:
2288:
2287:Mozilla Hacks
2284:
2278:
2275:
2263:
2259:
2253:
2250:
2238:
2234:
2230:
2224:
2221:
2210:
2206:
2200:
2197:
2186:
2182:
2176:
2173:
2162:
2158:
2152:
2149:
2137:
2136:The Changelog
2133:
2127:
2124:
2113:
2109:
2103:
2100:
2089:
2085:
2079:
2076:
2065:
2061:
2055:
2053:
2049:
2038:
2034:
2028:
2026:
2022:
2010:
2009:
2004:
1998:
1995:
1984:on 2020-10-31
1983:
1979:
1978:
1973:
1967:
1964:
1959:
1955:
1949:
1946:
1935:on 2009-01-07
1934:
1930:
1924:
1921:
1910:
1906:
1899:
1896:
1885:on 2008-01-18
1884:
1880:
1873:
1870:
1858:
1854:
1847:
1844:
1832:
1826:
1823:
1811:
1805:
1802:
1791:
1787:
1781:
1778:
1767:
1763:
1757:
1754:
1746:September 22,
1742:
1738:
1731:
1728:
1715:
1714:Mozilla Hacks
1711:
1705:
1702:
1690:
1686:
1680:
1677:
1664:
1663:Mozilla Hacks
1660:
1654:
1652:
1648:
1635:
1631:
1625:
1622:
1611:
1607:
1600:
1598:
1594:
1583:
1579:
1573:
1571:
1569:
1567:
1563:
1552:
1545:
1542:
1531:on 2009-07-28
1530:
1526:
1522:
1515:
1513:
1509:
1498:on 2012-10-25
1497:
1493:
1492:CNET Networks
1489:
1485:
1479:
1477:
1473:
1462:
1458:
1451:
1449:
1445:
1434:on 2011-06-29
1433:
1429:
1423:
1420:
1409:on 2019-10-08
1408:
1404:
1400:
1394:
1391:
1380:
1374:
1371:
1366:
1362:
1355:
1352:
1347:
1343:
1337:
1334:
1326:
1322:
1315:
1308:
1306:
1302:
1298:
1288:on 2019-09-29
1287:
1283:
1277:
1275:
1271:
1259:
1253:
1250:
1239:. mozilla.org
1238:
1232:
1229:
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1220:
1214:
1211:
1205:
1203:
1201:
1197:
1193:
1189:
1185:
1177:
1174:
1171:
1170:
1169:
1165:
1161:
1157:
1156:Mozilla Azure
1149:
1144:
1140:
1137:
1134:
1130:
1127:
1124:
1120:
1116:
1112:
1109:
1106:
1102:
1098:
1094:
1091:
1087:
1083:
1080:
1077:
1073:
1069:
1068:retained mode
1065:
1061:
1057:
1054:
1051:
1047:
1043:
1039:
1036:
1035:
1034:
1028:
1026:
1022:
1020:
1016:
1012:
1011:memory safety
1008:
1004:
1003:Servo project
996:
994:
991:
989:
985:
981:
977:
973:
966:
964:
960:
954:
952:
950:
946:
942:
938:
934:
930:
926:
922:
918:
914:
910:
906:
902:
897:
895:
891:
890:GNOME DevHelp
887:
883:
879:
875:
867:
865:
863:
859:
855:
851:
847:
843:
838:
836:
832:
828:
824:
820:
816:
812:
808:
803:
801:
797:
793:
789:
785:
781:
777:
776:Mozilla Suite
773:
769:
761:
759:
749:
744:
742:
738:
734:
730:
726:
722:
714:
712:
710:
702:
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689:
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633:
632:
622:
617:
615:
610:
608:
603:
602:
600:
599:
596:
593:
592:
587:
586:Mozilla Suite
584:
582:
579:
577:
574:
573:
572:
571:
566:
561:
560:WebExtensions
558:
556:
553:
551:
548:
545:
541:
538:
533:
530:
528:
525:
523:
520:
519:
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512:
510:
507:
506:
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490:
486:
485:
476:
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450:
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431:
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422:
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414:
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400:
396:
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388:
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361:
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344:
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314:
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306:
302:
294:
292:
290:
286:
282:
278:
274:
270:
266:
262:
258:
253:
251:
250:client/server
247:
243:
239:
235:
231:
227:
224:
219:
217:
214:
211:browser, the
210:
206:
203:developed by
202:
198:
189:
173:
169:
166:
163:
161:
157:
154:
151:
149:
145:
142:
138:
134:
131:
127:
120:
115:
103:
102:
100:
98:
94:
90:
74:
72:
68:
64:
60:
59:Adobe Systems
56:
52:
49:
47:
43:
39:
34:
19:
5068:WorldWideWeb
4783:MediaBrowser
4778:GreenBrowser
4659:Firefox Lite
4629:
4565:Discontinued
4341:
4043:Privacy mode
3994:Web browsers
3930:Discontinued
3869:
3766:
3736:Lou Montulli
3721:Brendan Eich
3711:Eric J. Bina
3695:Netscape ISP
3680:Netscape.com
3673:Web services
3453:Common Voice
3430:
3423:
3409:Other topics
3386:MDN Web Docs
3339:John Hammink
3334:Brendan Eich
3324:Tantek Çelik
3244:Organization
3222:
3218:
3204:
3192:
3185:
3168:
3161:
3139:
3132:
3103:
3096:
3089:
3082:
3075:
3068:
3063:Firefox Send
3061:
3054:
3047:
3041:Discontinued
3005:
3001:SpiderMonkey
2954:
2931:
2924:
2917:
2910:
2903:
2843:
2836:
2829:
2822:
2815:
2754:
2747:
2740:
2733:
2688:
2676:
2669:
2662:
2655:
2648:
2641:
2634:
2507:. Retrieved
2503:the original
2493:
2481:. Retrieved
2467:
2453:
2438:
2424:
2413:. Retrieved
2409:
2400:
2389:. Retrieved
2385:
2376:
2365:. Retrieved
2361:
2351:
2340:. Retrieved
2338:. 2017-09-17
2335:
2326:
2315:. Retrieved
2312:Mozilla Wiki
2311:
2302:
2291:. Retrieved
2289:. 2017-11-13
2286:
2277:
2266:. Retrieved
2264:. 2016-10-27
2261:
2252:
2241:. Retrieved
2232:
2223:
2212:. Retrieved
2209:Mozilla Blog
2208:
2199:
2188:. Retrieved
2185:Mozilla Wiki
2184:
2175:
2164:. Retrieved
2160:
2151:
2140:. Retrieved
2135:
2126:
2115:. Retrieved
2111:
2102:
2091:. Retrieved
2087:
2078:
2067:. Retrieved
2063:
2040:. Retrieved
2036:
2013:. Retrieved
2008:Ars Technica
2006:
1997:
1986:. Retrieved
1982:the original
1975:
1966:
1958:MDN Web Docs
1957:
1948:
1937:. Retrieved
1933:the original
1923:
1912:. Retrieved
1908:
1898:
1887:. Retrieved
1883:the original
1872:
1860:. Retrieved
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