Usage share of web browsers

usage sharebrowser market sharemarket shareglobal market share statisticsmarket-sharemost popular browsermost widely used web browserstatistics of Web browser usageusage share across all platformsvery accurate
The usage share of web browsers is the proportion, often expressed as a percentage, of visitors to a group of web sites that use a particular web browser.wikipedia
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Web browser

browserweb browsersinternet browser
The usage share of web browsers is the proportion, often expressed as a percentage, of visitors to a group of web sites that use a particular web browser.
Navigator quickly became the most popular browser.

Internet Explorer 6

6Internet Explorer 6.0IE6
IE6 was the most widely used web browser during its tenure, surpassing Internet Explorer 5.x. At its peak in 2002 and 2003, IE6 attained a total market share of nearly 90%, with all versions of IE combined reaching 95%.

Google Chrome

ChromeChrome browserGoogle Chrome Extensions
, StatCounter estimates that Chrome has a 71% worldwide browser market share on traditional PCs and 63.34% share across all platforms.

Firefox

Mozilla FirefoxFirefox browserSpread Firefox
, Firefox has 9.54% usage share as a "desktop" browser, according to StatCounter, making it the second-most popular browser against Google Chrome with 69.08% (while share is exceptionally high in some countries where Firefox is most popular; up to over 75% share); usage share across all platforms is lower at 4.44% (third-most popular overall).

Internet Explorer

Microsoft Internet ExplorerIEMSIE
Internet Explorer was once the most widely used web browser, attaining a peak of about 95% usage share by 2003.

User agent

user-agentuser agent stringuser agents
Measuring browser usage in the number of requests (page hits) made by each user agent can be misleading.
A result of user agent spoofing may be that collected statistics of Web browser usage are inaccurate.

Net Applications

Net Applications bases its usage share on statistics from 40,000 websites having around 160 million unique visitors per month.
The company is commonly known in the web browser development and technology news communities for its global market share statistics.

WebKit

JavaScriptCoreWebKitGTK+QtWebKit
All of Apple Inc.'s platforms use the Safari browser, including macOS and iOS systems with the WebKit engine.
By mid April 2015, WebKit browser market share was 50.3%.

Browser wars

browser warfirst browser warbrowser
A browser war is competition for dominance in the usage share of web browsers.

Netscape Navigator

NavigatorNetscapeMosaic Netscape
Netscape Navigator was a proprietary web browser, and the original browser of the Netscape line, from versions 1 to 4.08, and 9.x. It was the flagship product of the Netscape Communications Corp and was the dominant web browser in terms of usage share in the 1990s, but by 2002 its use had almost disappeared.

Usage share of operating systems

over 90% market sharearound 85% market sharedesktop operating system market
Another source of market share of various operating systems is StatCounter basing its estimate on web use (although this may not be very accurate).

Internet Explorer 11

1111.0Internet Explorer
Note: Wikimedia has recently had a large percentage of unrecognised browsers, previously counted as Firefox, that are now assumed to be Internet Explorer 11 fixed in the February 2014 and later numbers.
* Usage share of web browsers

Website

web sitewebsitesonline
The usage share of web browsers is the proportion, often expressed as a percentage, of visitors to a group of web sites that use a particular web browser.

Unique user

unique visitorunique visitorsunique users
Net Applications, in their NetMarketShare report, uses unique visitors to measure web usage.

Weight function

weighted sumweightedweights
Net Applications uses country-level weighting as well.

Sampling bias

ascertainment biasbiased samplebias
The goal of weighting countries based on their usage is to mitigate selection area based sampling bias.

Apple Inc.

AppleApple ComputerApple Inc
All of Apple Inc.'s platforms use the Safari browser, including macOS and iOS systems with the WebKit engine.