Usage share of web browsers: Difference between revisions

Content deleted Content added

Inline

Revision as of 08:32, 2 February 2010

The usage share of web browsers is the percentage of visitors to a group of websites that use a particular web browser. For example, when it is said that Internet Explorer has 59% usage share, it means that some version of Internet Explorer is used by 59% of visitors that visit a given set of sites.

Accuracy

Measuring browser usage in the number of requests (page hits) made by each user agent can be misleading.

Overestimation

Not all requests are generated by a user, as a user agent can make requests at regular time intervals without user input. In this case the user's activity might be overestimated. Some examples:

A web browser that refreshes the webpage at a regular time interval.
A feed reader that requests the RSS or Atom feed at a regular time interval.
Extra files like CSS hacks and JavaScript hacks are often sent to Internet Explorer.
Gecko-based browsers (such as Firefox) can prefetch linked web pages, potentially increasing hits. Link prefetching in Gecko-based browsers is used on pages with enhanced markup, including Google search results.^[1]
A user who revisits a site shortly after changing or upgrading browsers may be double-counted under some methodologies; overall numbers at the time of a new version's release may be skewed.^[2]
Certain anti-virus products fake their user-agent to appear to be popular browsers. This is done to trick attack sites that might display clean content to the scanner, but not to the browser. The Register reported in June 2008 that traffic from AVG Linkscanner, using an IE6 user-agent, outstripped human link clicks by nearly 10 to 1. ^[3]
Many types of software, such as Web validators or crawlers, fetch web pages, and send fictitious user-agent strings to appear more like normal traffic.
Browsers such as Safari maintain a dashboard of frequently visited sites. This generates hits to those sites on browser start or at times on launch of a new tab, in order to update the thumbnail images.

Underestimation

It is also possible to underestimate the usage share by using the number of requests, for example:

A graphical browser typically results in more hits than a text browser, as it downloads files referred to by the HTML document (e.g., images, CSS, and JavaScript).
Many browsers and download managers spoof a different user agent string to the web server to prevent erroneous or malicious browser sniffing which could result in receiving broken or incompatible code, or being completely blocked, and thus increasing the statistics for other browsers (as an example, prior to version 9, the Opera web browser had "Identify as Internet Explorer" as the default user setting). Sometimes you can detect these spoofing browsers based on other things but some people do not do it. (An example is IEMobile which ships in Windows Mobile 6.1.4 and 6.5 with the default user agent string as IE6 WinXP but if you look at the other HTTP Headers you can actually tell it is IEMobile)
Text-based and audio-based browsers do not download any web bugs at all.
Gecko-based browsers since Firefox 1.5 and Opera use fast Document Object Model (DOM) caching. JavaScript is only executed on pageload from net or disk cache, but not if it is loaded from DOM cache. This can have an impact on JavaScript based tracking of browser statistics.^[4]
Some browser extensions and security programs (such as the popular Firefox extension NoScript) block javascript, flash, applets and some forms of HTML (HTML blocked through ClearClick) for non-whitelisted sites. This may also affect JavaScript based tracking of browser statistics.
Many browsers accessing a site via one proxy are apt to be counted as only one access if the proxy caches the result; it is usual for browsers on mobile phones in particular to access the web via proxies (many of which violate HTTP's specifications for proxies; even if a web bug is designed to work despite proxying, the proxies run by mobile operators may well mislead it).
While most browsers generate additional page hits by refreshing web pages when user navigates back through page history, some browsers (such as Opera) reuse cached content without resending requests to server.^[5]^[6]
Generally, the more faithfully a browser implements HTTP's cache specifications, the more it shall be under-reported relative to browsers which implement those specifications poorly.^[6]
Many plug-ins can change (generally append strings to) the User Agent. This can lead to Browser Detection flaws.
User Agents are not guaranteed to be a certain format. As an example of the inconsistency almost every User Agent pretends to be Mozilla 5.0.
Some ISPs, mainly mobile phone ones, have begun stripping the user agent strings^[7]

Summary table

Source	Latest report	Internet Explorer	Firefox	Safari	Chrome	Opera
Stat Counter	January 2010	55.25%	31.64%	3.76%	6.04%	2.00%
Net Applications	January 2010	62.18%	24.41%	4.51%	5.20%	2.38%
W3Counter	December 2009	50.30%	32.00%	4.62%	5.40%	1.30%
StatOwl Template:Refun	December 2009	66.13%	20.82%	8.73%	3.51%	0.30%
MeanTemplate:Refun	December 2009	58.71%	27.35%	5.32%	4.75%	1.52%
MedianTemplate:Refun	December 2009	59.21%	28.29%	4.54%	5.02%	1.68%

^ The mean is calculated once all monthly sources have latest reports that fall in the same month and the median is calculated once the central reports are updated since it is unlikely outlier reports will give the median values; in the meanwhile the previous month's mean and median are used.
^ 92% of sites monitored by StatOwl, serve predominantly United States market.

Historical usage share

Net Applications (2004 Q4 to present)

On 2009-08-01, Net Applications began weighting its raw data based on the number of internet users in the countries concerned, using data from the CIA ; the changes were applied retroactively to older data.^[8] The table below uses weighted data from 2007 Q4 onwards (the unweighted data, without applying these retroactive changes, are marked with an asterisk).

Global usage share data from: Net Applications
Period	Internet Explorer	Firefox	Chrome	Safari	Opera	Netscape	Mozilla
2010 Q1	62.18%	24.41%	5.20%	4.51%	2.38%	0.35%	0.14%
2009 Q4	63.67%	24.46%	4.04%	4.41%	2.29%	0.32%	0.11%
2009 Q3	66.80%	23.06%	2.86%	4.13%	2.07%	0.50%	0.09%
2009 Q2	68.06%	23.00%	2.13%	3.67%	2.05%	0.68%	0.06%
2009 Q1	69.13%	22.67%	1.56%	3.58%	2.18%	0.51%	0.06%
2008 Q4	71.99%	20.78%	1.16%	3.11%	2.15%	0.41%	0.07%
2008 Q3	74.93%	19.07%	0.37%	2.73%	2.06%	0.43%	0.07%
2008 Q2	76.24%	18.16%		2.73%	1.97%	0.48%	0.08%
2008 Q1	77.83%	16.86%		2.65%	1.84%	0.41%	0.13%
2007 Q4	79.16%	15.84%		2.39%	1.78%	0.50%	0.09%
2007 Q3	78.85%	14.69%		4.80%	0.51%	0.76%	0.11%
2007 Q2	78.76%	14.92%		4.66%	0.46%	0.83%	0.15%
2007 Q1	79.38%	14.35%		4.70%	0.50%	0.77%	0.19%
2006 Q4	80.69%	13.50%		4.06%	0.56%	0.86%	0.23%
2006 Q3	82.88%	11.89%		3.30%	0.62%	0.88%	0.26%
2006 Q2	84.03%	10.67%		3.25%	0.57%	0.98%	0.32%
2006 Q1	85.01%	9.77%		3.10%	0.53%	1.09%	0.36%
2005 Q4	85.88%	9.00%		2.80%	0.54%	1.25%	0.43%
2005 Q3	86.74%	7.97%		2.24%	0.55%	1.92%	0.48%
2005 Q2	87.24%	8.08%		1.89%	0.52%	1.62%	0.59%
2005 Q1	89.02%	6.17%		1.70%	0.49%	1.89%	0.67%
2004 Q4	91.35%	3.66%		1.50%	0.51%	2.09%	0.80%

W3Counter (May 2007 to present)

Note: W3Counter previously only listed the top 10 browsers by version. This is one of the reasons why Opera fluctuates between (N/A) and 1.5% in the table below, as some versions only make it into the top 10 occasionally; "Other Mozilla" (and occasionally Chrome) also displays this kind of behavior for this reason. This site counts the last 15,000 page views from each of approximately 30,000 websites.

**Global Web Stats from W3Counter**
Date	Internet Explorer	Firefox	Chrome	Safari	Opera	Other Mozilla
2010-01-31 January 31, 2010	49.7 %	32.3 %	6.3 %	5.4 %	2.1 %	(N/A)
2009-12-31 December 31, 2009	50.3 %	32.3 %	5.5 %	5.1 %	2.1 %	(N/A)
2009-11-30 November 30, 2009	51.2 %	32.0 %	4.7 %	5.2 %	1.2 %	0.52 %
2009-10-31 October 31, 2009	51.3 %	32.1 %	4.2 %	5.1 %	2.0 %	(N/A)
2009-09-30 September 30, 2009	51.8 %	31.9 %	3.7 %	5.0 %	2.0 %	(N/A)
2009-08-31 August 31, 2009	52.4 %	32.1 %	3.6 %	4.9 %	1.9 %	(N/A)
2009-07-31 July 31, 2009	53.1 %	31.7 %	3.3 %	4.6 %	1.8 %	1.10 %
2009-06-30 June 30, 2009	57.1 %	31.6 %	(N/A)	3.2 %	2.0 %	1.0 %
2009-05-31 May 31, 2009	57.5 %	31.4 %	0.57 %	3.1 %	2.0 %	1.0 %
2009-04-30 April 30, 2009	57.6 %	31.6 %		2.9 %	2.0 %	1.0 %
2009-03-31 March 31, 2009	57.8 %	31.5 %		2.8 %	2.0 %	1.1 %
2009-02-28 February 28, 2009	58.1 %	31.3 %		2.7 %	2.0 %	1.1 %
2009-01-31 January 31, 2009	58.4 %	31.1 %		2.7 %	2.0 %	1.1 %
2008-12-31 December 31, 2008	58.08 %	30.71 %		2.58 %	0.71 %	0.51 %
2008-11-30 November 30, 2008	58.57 %	30.40 %		2.70 %	1.23 %	(N/A)
2008-10-31 October 31, 2008	59.05 %	30.13 %		2.77 %	1.36 %	(N/A)
2008-09-30 September 30, 2008	57.03 %	32.07 %		2.51 %	1.56 %	(N/A)
2008-08-31 August 31, 2008	58.46 %	31.40 %		1.80 %	1.55 %	(N/A)
2008-07-31 July 31, 2008	60.65 %	29.68 %		1.90 %	1.08 %	0.58 %
2008-06-30 June 30, 2008	61.43 %	29.02 %		2.02 %	1.13 %	0.60 %
2008-05-31 May 31, 2008	61.56 %	28.86 %		2.16 %	1.15 %	0.62 %
2008-04-30 April 30, 2008	61.66 %	28.79 %		2.31 %	1.14 %	0.58 %
2008-03-31 March 31, 2008	61.66 %	28.39 %		2.50 %	1.11 %	0.61 %
2008-02-29 February 29, 2008	61.67 %	28.38 %		2.54 %	1.07 %	0.65 %
2008-01-31 January 31, 2008	61.79 %	28.39 %		2.42 %	1.02 %	0.52 %
2007-12-01 December 1, 2007	62.36 %	27.77 %		1.84 %	1.41 %	0.56 %
2007-11-10 November 10, 2007	62.55 %	27.56 %		1.95 %	1.39 %	0.59 %
2007-10-30 October 30, 2007	62.41 %	27.70 %		1.99 %	1.35 %	0.60 %
2007-09-20 September 20, 2007	66.22 %	25.45 %		1.76 %	1.22 %	0.61 %
2007-08-30 August 30, 2007	66.20 %	25.43 %		1.76 %	1.22 %	0.61 %
2007-07-30 July 30, 2007	66.41 %	25.11 %		1.75 %	1.16 %	0.65 %
2007-06-30 June 30, 2007	66.20 %	25.08 %		1.81 %	0.69 %	0.71 %
2007-05-30 May 30, 2007	66.69 %	24.55 %		1.85 %	1.22 %	0.73 %

StatCounter (July 2008 to present)

**Global stats from StatCounter (Top 5 browsers)**
Date	Internet Explorer	Firefox	Chrome	Safari	Opera	Netscape
2010-01 January 2010	55.25 %	31.64 %	6.04 %	3.76%	2.00 %
2009-12 December 2009	55.72 %	31.97 %	5.45 %	3.48%	2.06 %
2009-11 November 2009	56.57 %	32.21 %	4.66 %	3.67%	2.02 %
2009-10 October 2009	57.96 %	31.82 %	4.17 %	3.47%	1.88 %
2009-09 September 2009	58.37 %	31.34 %	3.69 %	3.28%	2.62 %
2009-08 August 2009	58.69 %	31.28 %	3.38 %	3.25%	2.67 %
2009-07 July 2009	60.11 %	30.50 %	3.01 %	3.02%	2.64 %
2009-06 June 2009	59.49 %	30.26 %	2.80 %	2.91%	3.46 %
2009-05 May 2009	62.09 %	28.75 %	2.42 %	2.65%	3.23 %
2009-04 April 2009	61.88 %	29.67 %	2.07 %	2.75%	2.96 %
2009-03 March 2009	62.52 %	29.40 %	1.73 %	2.73%	2.94 %
2009-02 February 2009	64.43 %	27.85 %	1.52 %	2.59 %	2.95 %
2009-01 January 2009	65.41 %	27.03 %	1.38 %	2.57 %	2.92 %
2008-12 December 2008	67.84 %	25.23 %	1.21 %	2.41 %	2.83 %
2008-11 November 2008	68.14 %	25.27 %	0.93 %	2.49 %	3.01 %
2008-10 October 2008	67.68 %	25.54 %	1.02 %	2.91 %	2.69 %
2008-09 September 2008	67.16 %	25.77 %	1.03 %	3.00 %	2.86 %
2008-08 August 2008	68.91 %	26.08 %		2.99 %	1.83 %	0.07 %
2008-07 July 2008	68.57 %	26.14 %		3.30 %	1.78 %	0.07 %

StatOwl.com (September 2008 to present)

**Global usage share data from StatOwl.com**
Period	Internet Explorer	Mozilla / Firefox	Chrome	Safari	Opera	Gecko	Netscape Navigator
2009-12 December 2009	66.12 %	20.82 %	3.51 %	8.73 %	0.30 %	0.06 %	(N/A)
2009-11 November 2009	67.74 %	20.15 %	2.88 %	8.56 %	0.28 %	0.09 %	(N/A)
2009-10 October 2009	68.38 %	20.32 %	2.56 %	8.09 %	0.27 %	0.14 %	(N/A)
2009-09 September 2009	67.25 %	21.12 %	2.41 %	8.46 %	0.28 %	0.21 %	(N/A)
2009-08 August 2009	68.37 %	21.32 %	2.21 %	7.29 %	0.28 %	0.23 %	(N/A)
2009-07 July 2009	69.29 %	21.06 %	2.05 %	6.77 %	0.30 %	0.24 %	(N/A)
2009-06 June 2009	71.44 %	19.48 %	1.93 %	6.30 %	0.33 %	0.22 %	(N/A)
2009-05 May 2009	71.35 %	20.26 %	1.64 %	5.95 %	0.31 %	0.21 %	(N/A)
2009-04 April 2009	71.38 %	20.46 %	1.43 %	5.80 %	0.31 %	0.19 %	(N/A)
2009-03 March 2009	72.03 %	20.00 %	1.19 %	5.91 %	0.30 %	(N/A)	0.10 %
2009-02 February 2009	74.04 %	18.64 %	0.97 %	5.57 %	0.27 %	(N/A)	0.10 %
2009-01 January 2009	73.05 %	19.39 %	0.96 %	5.72 %	0.29 %	(N/A)	0.12 %
2008-12 December 2008	70.89 %	20.87 %	0.95 %	6.32 %	0.33 %	(N/A)	0.13 %
2008-11 November 2008	72.07 %	19.78 %	0.68 %	6.57 %	0.29 %	(N/A)	0.13 %
2008-10 October 2008	73.45 %	18.88 %	0.57 %	6.22 %	0.26 %	(N/A)	0.16 %
2008-09 September 2008	74.53 %	18.14 %	0.52 %	5.98 %	0.22 %	(N/A)	0.17 %

TheCounter.com (2000 to present)

TheCounter.com identifies sixteen versions of six browsers (Internet Explorer, Firefox, Safari, Opera, Netscape, and Konqueror). Other browsers are categorised as either ‘Netscape compatible’ (including Google Chrome, which may also be categorized as 'Safari' due to its 'Webkit' subtag) or ‘unknown’. Internet Explorer 8 is identified as Internet Explorer 7. Monthly data includes all hits from 2008-02-01 until the end of the month concerned. More than the exact browser type, this data identifies the underlying web rendering engine used by various browsers, and the table below aggregates them in the same column.

**Global usage share data from TheCounter.com (global statistics)**
Period	Internet Explorer	Netscape / Mozilla / Firefox	Safari	Opera	Netscape Navigator	Sources
2009 Q3	69.07 %	20.59 %	8.10 %	0.89 %	0.06 %	Jul, Aug, Sep
2009 Q2	70.31 %	20.12 %	6.44 %	0.94 %	0.06 %	Apr, May, Jun
2009 Q1	71.25 %	20.01 %	5.47 %	0.92 %	0.08 %	Jan, Feb, Mar
2008 Q4	74.24 %	18.66 %	4.52 %	0.89 %	0.07 %	Oct, Nov, Dec
2008 Q3	76.33 %	17.97 %	3.76 %	0.84 %	0.07 %	Jul, Aug, Sep
2008 Q2	78.30 %	16.36 %	3.41 %	0.81 %	0.06 %	Apr, May, Jun
2008 Q1	78.80 %	15.87 %	3.32 %	0.79 %	0.06 %	Jan, Feb, Mar
2007 Q4	81.14 %	13.81 %	3.21 %	0.67 %	0.06 %	Oct, Nov, Dec
2007 Q3	81.63 %	13.49 %	3.00 %	0.66 %	0.06 %	Jul, Aug, Sep
2007 Q2	82.97 %	12.41 %	2.87 %	0.64 %	0.06 %	Apr, May, Jun
2007 Q1	83.69 %	11.57 %	2.92 %	0.57 %	0.06 %	Jan, Feb, Mar
2006 Q4	84.11 %	11.13 %	2.80 %	0.60 %	0.05 %	Nov, Dec
2006 Q3	84.48 %	10.56 %	2.27 %	0.73 %	0.06 %	Jul, Aug, Sep
2006 Q2	86.32 %	9.03 %	1.89 %	0.70 %	0.05 %	Apr, May, Jun
2006 Q1	90.01 %	6.77 %	1.40 %	0.58 %	0.05 %	Jan, Feb, Mar
2005 Q4	87.25 %	8.60 %	1.83 %	0.71 %	0.07 %	Oct, Nov, Dec
2005 Q3	87.58 %	8.42 %	1.60 %	0.67 %	0.07 %	Jul, Aug, Sep
2005 Q2	90.90 %	6.02 %	0.99 %	0.51 %	0.09 %	Apr, May, Jun
2005 Q1	90.77 %	5.73 %	1.00 %	0.54 %	0.11 %	Jan, Feb, Mar
2004 Q4	90.98 %	5.10 %	0.77 %	0.68 %	0.18 %	Oct, Nov, Dec
2004 Q3	92.70 %	3.57 %	0.73 %	0.65 %	0.20 %	Jul, Aug, Sep
2004 Q2	95.04 %	2.37 %	0.67 %	0.51 %	0.32 %	Apr, May, Jun
2004 Q1	94.28 %	2.70 %		0.52 %	0.36 %	Jan, Feb, Mar
2003 Q4						Oct, Nov, Dec
2003 Q3						Jul, Aug, Sep
2003 Q2	94.43 %	2.22 %		0.66 %	1.45 %	Apr, May, Jun
2003 Q1	94.18 %	2.15 %		0.65 %	1.77 %	Jan, Feb, Mar
2002 Q4	93.94 %	1.67 %		0.83 %	2.31 %	Oct, Nov, Dec
2002 Q3	93.32 %	1.36 %		0.94 %	3.04 %	Jul, Aug, Sep
2002 Q2	92.47 %	1.13 %		0.82 %	4.13 %	Apr, May, Jun
2002 Q1	92.40 %	0.93 %		0.52 %	4.67 %	Jan, Feb, Mar
2001 Q4	90.83 %	0.71 %		0.36 %	5.23 %	Oct, Nov, Dec
2001 Q3	88.43 %	0.26 %		0.31 %	6.49 %	Jul, Aug, Sep
2001 Q2	87.99 %	0.27 %		0.28 %	7.46 %	Apr, May, Jun
2001 Q1	86.80 %	0.30 %		0.22 %	9.84 %	Jan, Feb, Mar
2000 Q4	83.95 %	0.14 %		0.14 %	12.61 %	Oct, Nov, Dec
2000 Q3	82.76 %	0.04 %		0.14 %	14.35 %	Jul, Aug, Sep
2000 Q2	80.30 %	0.02 %		0.12 %	17.54 %	Apr, May, Jun
2000 Q1	79.09 %	0.00 %		0.13 %	19.25 %	Jan, Feb, Mar

Older reports

Wikimedia (November 2009)

**Usage share data from Wikimedia visitor log analysis report**
Period	Internet Explorer	Mozilla / Firefox	Safari	Chrome	Opera
November 2009	54.43%	29.96%	4.96%	3.73%	2.82%

OneStat.com (April 2002 to March 2009)

**Global usage share data from OneStat.com (press releases)**
Period	Internet Explorer	Mozilla / Firefox	Safari	Chrome	Opera	Netscape	Netscape Navigator
2009-04-04 March 2009	79.59 %	15.59 %	2.65 %	0.86 %	0.54 %	0.31 %
2008-11-24 November 2008	81.36 %	14.67 %	2.42 %	0.54 %	0.55 %	0.32 %
2008-02-18 February 2008	83.27 %	13.76 %	2.18 %		0.55 %	0.14 %
2007-07-02 June 2007	84.66 %	12.72 %	1.79 %		0.61 %	0.11 %
2007-01-22 January 2007	85.81 %	11.69 %	1.64 %		0.58 %	0.13 %
2006-11-06 November 2006	85.24 %	12.15 %	1.61 %		0.69 %	0.11 %
2006-10-09 October 2006	85.85 %	11.49 %	1.61 %		0.69 %	0.12 %
2006-07-09 July 2006	83.05 %	12.93 %	1.84 %		1.00 %	0.16 %
2006-05-15 May 2006	85.17 %	11.79 %	2.02 %		0.79 %	0.15 %
2006-01-31 January 2006	85.82 %	11.23 %	1.88 %		0.77 %	0.16 %
2005-11-02 November 2005	85.45 %	11.51 %	1.75 %		0.77 %	0.26 %
2005-04-27 April 2005	86.63 %	8.69 %	1.26 %		1.03 %	1.08 %
2005-02-28 February 2005	87.28 %	8.45 %	1.21 %		1.09 %	1.11 %
2004-11-22 November 2004	88.90 %	7.35 %	0.91 %		1.33 %
2004-05-28 May 2004	93.9 %	2.1 %	0.71 %		1.02 %
2004-01-19 January 2004	94.8 %	1.8 %	0.48 %		0.8 %
2003-07-28 July 2003	95.4 %	1.6 %	0.25 %		0.6 %	1.9 %	0.6 %
2003-02-03 February 2003	95.2 %	1.2 %	0.11 %		0.7 %	1.9 %	1.0 %
2002-12-16 December 2002	95.0 %	1.1 %			0.8 %	1.9 %	1.1 %
2002-09-30 September 2002	94.9 %	0.8 %			0.9 %	1.8 %	1.2 %
2002-06-24 June 2002	95.3 %	0.4 %			0.7 %	1.5 %	1.9 %
2002-04-29 April 2002	96.6 %				0.5 %	0.7 %	2.1 %

**USA usage share data from OneStat.com (press releases)**
Period	Internet Explorer	Mozilla / Firefox	Safari	Chrome	Opera	Netscape
2009-03 March 2009	72.69 %	20.40 %	4.53 %	1.05 %	0.38 %	0.49 %
2008-11 November 2008	75.54 %	18.74 %	3.95 %	0.62 %	0.39 %	0.50 %
2007-06 June 2007	75.69 %	19.65 %	3.77 %		0.61 %	0.17 %
2007-01 January 2007	78.13 %	16.11 %	3.68 %		0.73 %	0.18 %

**Canadian usage share data from OneStat.com (press releases)**
Period	Internet Explorer	Mozilla / Firefox	Safari	Chrome	Opera	Netscape
2009-03 March 2009	65.55 %	23.09 %	7.36 %	1.32 %	0.75 %	0.56 %
2008-11 November 2008	69.67 %	20.38 %	7.56 %	0.92 %	0.76 %	0.56 %
2007-06 June 2007	75.76 %	16.47 %	5.72 %		0.69 %	0.13 %
2007-01 January 2007	79.00 %	14.13 %	4.70 %		0.71 %	0.14 %

**UK usage share data from OneStat.com (press releases)**
Period	Internet Explorer	Mozilla / Firefox	Safari	Chrome	Opera	Netscape
2009-03 March 2009	80.91 %	15.16 %	1.94 %	0.85 %	0.60 %	0.36 %
2008-11 November 2008	83.77 %	11.45 %	1.76 %	0.43 %	0.60 %	0.34 %
2007-06 June 2007	86.00 %	11.22 %	1.61 %		0.53 %	0.10 %
2007-01 January 2007	86.72 %	10.86 %	1.78 %		0.49 %	0.10 %

**Australian usage share data from OneStat.com (press releases)**
Period	Internet Explorer	Mozilla / Firefox	Safari	Chrome	Opera	Netscape
2007-06 June 2007	66.42 %	26.32 %	1.86 %		4.05 %	0.24 %
2007-01 January 2007	65.71 %	26.68 %	1.77 %		4.28 %	0.24 %

**French usage share data from OneStat.com (press releases)**
Period	Internet Explorer	Mozilla / Firefox	Safari	Chrome	Opera	Netscape
2009-03 March 2009	71.57 %	23.48 %	2.90 %	0.86 %	0.54 %	0.46 %
2008-11 November 2008	71.50 %	23.45 %	3.23 %	0.59 %	0.56 %	0.51 %

ADTECH (Europe, 2004 to Q1 2009)

**Europe usage share data from ADTECH (press releases)**
Period	Internet Explorer	Firefox	Safari	Chrome	Opera	Mozilla	Netscape
2009-03 (2009-04-01) Q1 2009	67.7 %	25.3 %	2.6 %	1.0 %	1.4 %	1.1 %
2008-03 (2008-04-08) Q1 2008	76.2 %	18.1 %	1.7 %		1.0 %	2.6 %
2007-12 (2008-01-31) Q4 2007	76.0 %	18.0 %	1.6 %		1.0 %	2.9 %
2007-07 (2007-08-23) July 2007	77.5 %	15.5 %	1.6 %		0.9 %	3.9 %
2007-02 (2007-03-20) February 2007	77.34 %	14.34 %	1.63 %		0.85 %	5.11 %
2006-04 (2006-06-13) February–April 2006	83.36 %	12.38 %	1.67 %		0.77 %	0.82 %	0.38 %
2005-09 (2005-11-14) September 2005	83.31 %	12.41 %	1.40 %		0.90 %	1.06 %	0.61 %
2005-06 (2005-06-27) June 2005	85.10 %	10.11 %	1.34 %		1.21 %	1.05 %	0.60 %
2005-03 (2005-04-21) March 2005	86.73 %	8.96 %			1.12 %	1.14 %	0.71 %
2005-02 (2005-04-21) February 2005	87.57 %	7.85 %			1.05 %	1.26 %	0.76 %
2005-01 (2005-04-21) January 2005	87.13 %	7.43 %			1.70 %	1.33 %	0.85 %
2004-11-30 (2004-12-02) November 30, 2004	89.47 %	5.51 %			1.01 %	2.50 %	0.92 %
2004-11-16 (2004-12-02) November 16, 2004	90.56 %	4.56 %			1.07 %	2.38 %	0.89 %
2004-09 (2004-10-19) September 2004	92.63 %	2.91 %			1.00 %	2.10 %	0.82 %
2004-08 (2004-12-02) August 2004	93.08 %	2.15 %			0.89 %	2.18 %	0.95 %
2004-07 (2004-10-19) July 2004	93.08 %	1.64 %			0.99 %	2.62 %	0.97 %
2004-04 (2004-06-02) January–April 2004	94.72 %				0.73 %	2.50 %	1.49 %

AT Internet Institute (Europe, July 2007 to September 2009)

AT Internet Institute was formerly known as XiTi.

**Europe usage share data from AT Internet Institute (browsers barometer)**
Date	Internet Explorer	Netscape	Firefox	Opera	Safari	Chrome	Source
September 2009	62.0%	N/A	28.4%	2.2%	4.3%	2.8%	2009-11
April 2009	63.6%	0.6%	28.4%	2.2%	3.4%	1.7%	2009-5
March 2009	64.6%	0.6%	27.8%	2.2%	3.3%	1.4%
February 2009	65.6%	0.5%	27.4%	2.1%	3.0%	1.3%
January 2009	58.1%	0.6%	32.5%	4.1%	3.0%	1.5%	2009-1
December 2008	58.5%	0.6%	32.3%	4.5%	2.7%	1.3%	2009-1
November 2008	59.5%	0.6%	31.1%	5.1%	2.5%	1.1%	2008-12-22
October 2008	59.2%	0.6%	31.1%	5.4%	2.4%	1.1%	2008-12-22
September 2008	60.2%	0.4%	31.2%	4.8%	2.4%	1.0%	2008-10-10
August 2008	59.4%	0.3%	33.0%	4.5%	2.6%
July 2008	60.4%	0.3%	32.2%	4.5%	2.4%
June 2008	60.5%	0.3%	31.4%	5.1%	2.5%
May 2008	61.7%	0.4%	30.7%	4.7%	2.4%
April 2008	64.5%	0.5%	28.9%	3.6%	2.4%
March 2008	65.0%	0.5%	28.8%	3.3%	2.3%		2008-04-30
February 2008	65.6%	0.5%	28.5%	3.2%	2.2%
January 2008	66.1%	0.5%	28.0%	3.2%	2.1%
December 2007	66.1%	0.5%	28.0%	3.3%	2.0%
November 2007	66.9%	0.5%	27.3%	3.2%	1.9%
October 2007	67.5%	0.4%	27.0%	3.1%	1.8%
September 2007	66.6%	0.3%	27.7%	3.4%	1.8%		2007-10-30
July 2-8, 2007	66.5%	0.3%	27.8%	3.5%	1.7%		2007-07-18

WebSideStory (USA, February 1999 to June 2006)

**USA usage share data from: WebSideStory**
Date	Internet Explorer	Netscape / Mozilla	Firefox	Source
June 2006	86.64%		9.95%	July 19, 2006
January 5, 2006	87.63%		8.88%	Jan. 12, 2006
November 4, 2005	88.16%	1.61%	8.13%	November 10, 2005
September 23, 2005	88.46%	1.69%	7.86%	September 27, 2005
April 29, 2005	88.86%	2.23%	6.75%	May 10, 2005
February 18, 2005	89.85%	2.47%	5.69%	Feb. 28, 2005
January 14, 2005	90.28%	2.64%	4.95%
December 3, 2004	91.80%	2.83%	4.06%
November 5, 2004	92.89%	2.95%	3.03%
October 8, 2004	93.21%	3.05%	2.66%	December 13, 2004
June 4, 2004	95.48%	3.53%		December 13, 2004
August 26, 2002	95.97%	3.39%		August 28, 2002
October 25, 2001	89.03%	10.47%		October 31, 2001
April 25, 2001	86.61%	13.10%		May 1, 2001
February 21, 2001	87.71%	12.01%		February 22, 2001
June 18, 2000	86.08%	13.90%		February 22, 2001
August 2, 1999	75.31%	24.68%		August 9, 1999
April 6, 1999	68.75%	29.46%		April 7, 1999
March 1, 1999	66.90%	31.21%		March 2, 1999
February 8, 1999	64.60%	33.43%		February 22, 2001

GVU WWW user survey (January 1994 to October 1998)

**Usage share data from: GVU WWW user survey**
Date	Mosaic	Netscape Navigator	Internet Explorer	Source
October 1998		64%	32.2%	Primary Browser in 12 Months
April 1998		70%	22.7%	Browser Expected to Use in 12 Months
October 1997		59.67%	15.13%	Browser Expected to Use in 12 Months
April 1997		81.13%	12.13%	Browser Expected to Use in 12 Months
October 1996		80.45%	12.18%	Browser Expected to Use in 12 Months
April 1996		89.36%	3.76%	Browser Expected to Use in 12 Months
April 1995	9%	54%		Hal Berghel's Cybernautica - "A Web Monopoly"
October 1994	68%	18%		Result Graph - Browser
January 1994	97%			General Results Graphs

EWS Web Server at UIUC (1996 Q2 to 1998)

**Usage share data from: EWS Web Server at UIUC**
Date	Mosaic	Internet Explorer	Netscape Navigator	Source
1998 Q4		50.43%	46.87%	Oct 1998, Nov 1998, Dec 1998
1998 Q3		47.90%	48.97%	Jul 1998, Aug 1998, Sep 1998
1998 Q2		43.17%	53.57%	Apr 1998, May 1998, Jun 1998
1998 Q1		39.67%	57.63%	Jan 1998, Feb 1998, Mar 1998
1997 Q4		35.53%	62.23%	Oct 1997, Nov 1997, Dec 1997
1997 Q3		32.40%	64.93%	Jul 1997, Aug 1997, Sep 1997
1997 Q2	0.37%	27.67%	69.77%	Apr 1997, May 1997, Jun 1997
1997 Q1	0.60%	22.87%	74.33%	Jan 1997, Feb 1997, Mar 1997
1996 Q4	1.20%	19.07%	77.13%	Oct 1996, Nov 1996, Dec 1996
1996 Q3	2.47%	13.97%	80.37%	Jul 1996, Aug 1996, Sep 1996
1996 Q2	6.93%	9.60%	82.77%	Apr 1996, May 1996, Jun 1996

ZD Market Intelligence (USA, January 1997 to January 1998)

**Usage share data from: ZD Market Intelligence**
Date	Internet Explorer	Netscape Navigator	Source
January 1998	39%	54%	Behind the numbers: Browser market share
January 1997	21%	63%	Behind the numbers: Browser market share

Zona Research (USA, January 1997 to July 1998)

**Usage share data from: Zona Research**
Date	Internet Explorer	Netscape Navigator	Source
July 1998	45%	54%	Behind the numbers: Browser market share
September 1997	36%	62%
January 1997	28%	70%

AdKnowledge (January 1998 to June 1998)

**Usage share data from: AdKnowledge**
Date	Internet Explorer	Netscape Navigator	Source
June 1998	46%	52%	Behind the numbers: Browser market share
March 1998	42%	57%
January 1998	36%	61%

Dataquest (1995 to 1997)

**Usage share data from: Dataquest**
Date	Internet Explorer	Netscape Navigator	Source
1997	39.4%	57.6%	Browser wars: High price, huge rewards
1996	20%	73%
1995	2.9%	80.1%

International Data Corporation (USA, 1996 to 1997)

**Usage share data from: International Data Corporation**
Date	Internet Explorer	Netscape Navigator	Source
1997	23%	51%	Behind the numbers: Browser market share
1996	16%	55%	Behind the numbers: Browser market share

References

^ "Google feature list".
^ Gregg Keizer (2008-06-23). "Firefox 3.0 boosts Mozilla's market share". Computerworld. IDG. Retrieved 2008-06-27.
^ Cade Metz (2008-06-26). "AVG disguises fake traffic as IE6". The Register. Retrieved 2008-09-05.
^ https://developer.mozilla.org/en/docs/Using_Firefox_1.5_caching
^ "Opera Cache Contexts vs Security".
^ ^a ^b "HTTP History Lists and Back Button".
^ "Techcrunch ISP Strip user agents".
^ "Country Level Weighting". Net Applications. 2009-08-01. Retrieved 2009-08-01.

External links

Chuck Upsdell's Browser Stats lists web stats from many different stats sources and gives the approximate current usage share of the most popular layout engines.
Clicky Web Analytics lists data from over eighty thousand unique web sites
StatCounter Global Stats tracks the market share of search engines, browsers and operating systems including mobile from over 4 billion monthly page views.
W3Schools' Browser Statistics lists the web stats only from the W3 Schools site, which gives the approximate usage share of browsers among "people with an interest for web technologies."

[1] "Google feature list".

[2] Gregg Keizer (2008-06-23). "Firefox 3.0 boosts Mozilla's market share". Computerworld. IDG. Retrieved 2008-06-27.

[3] Cade Metz (2008-06-26). "AVG disguises fake traffic as IE6". The Register. Retrieved 2008-09-05.

[4] ttps://developer.mozilla.org/en/docs/Using_Firefox_1.5_caching

[5] "Opera Cache Contexts vs Security".

[HTTP_History_Lists_and_Back_Button-6] "HTTP History Lists and Back Button".

[7] "Techcrunch ISP Strip user agents".

[8] "Country Level Weighting". Net Applications. 2009-08-01. Retrieved 2009-08-01.

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

@@ Line 343: / Line 343: @@
 !scope="col" style="width:6em"| [[Internet Explorer|Internet<br />Explorer]]<br />
 !scope="col" style="width:6em"| [[Mozilla Application Suite|Mozilla]] /<br />[[Mozilla Firefox|Firefox]]<br />
-!scope="col" style="width:6em"| [[Safari (web browser)|Safari]]<br /><br />
 !scope="col" style="width:6em"| [[Google Chrome|Chrome]]<br /><br />
+!scope="col" style="width:6em"| [[Safari (web browser)|Safari]]<br /><br />
 !scope="col" style="width:6em"| [[Opera (web browser)|Opera]]<br /><br />
 !scope="col" style="width:6em"| [[Gecko (layout engine)|Gecko]]<br /><br />
@@ Line 350: / Line 350: @@
 |-
 !scope="row" style="text-align:right;font-weight:normal"| <span style="display:none">2009-12</span> [http://www.statowl.com/web_browser_market_share.php?1=1&&interval=month&chart_id=4&fltr_br=&fltr_os=&fltr_se=&fltr_cn=&timeframe=last_month&timeframe=custom|2009-12|2009-12 December 2009]
-| 66.12 % || 20.82 % ||  8.73 % ||  3.51 % ||  0.30 % || 0.06 % ||  (N/A)
+| 66.12 % || 20.82 % ||  3.51 % ||  8.73 % ||  0.30 % || 0.06 % ||  (N/A)
 |-
 !scope="row" style="text-align:right;font-weight:normal"| <span style="display:none">2009-11</span> [http://www.statowl.com/web_browser_market_share.php?1=1&&interval=month&chart_id=4&fltr_br=&fltr_os=&fltr_se=&fltr_cn=&timeframe=last_month&timeframe=custom|2009-11|2009-11 November 2009]
-| 67.74 % || 20.15 % ||  8.56 % ||  2.88 % ||  0.28 % || 0.09 % ||  (N/A)
+| 67.74 % || 20.15 % ||  2.88 % ||  8.56 % ||  0.28 % || 0.09 % ||  (N/A)
 |-
 !scope="row" style="text-align:right;font-weight:normal"| <span style="display:none">2009-10</span> [http://www.statowl.com/web_browser_market_share.php?1=1&&interval=month&chart_id=4&fltr_br=&fltr_os=&fltr_se=&fltr_cn=&timeframe=last_month&timeframe=custom|2009-10|2009-10 October 2009]
-| 68.38 % || 20.32 % ||  8.09 % ||  2.56 % ||  0.27 % || 0.14 % ||  (N/A)
+| 68.38 % || 20.32 % ||  2.56 % ||  8.09 % ||  0.27 % || 0.14 % ||  (N/A)
 |-
 !scope="row" style="text-align:right;font-weight:normal"| <span style="display:none">2009-09</span> [http://www.statowl.com/web_browser_market_share.php?1=1&&interval=month&chart_id=4&fltr_br=&fltr_os=&fltr_se=&fltr_cn=&timeframe=last_month&timeframe=custom|2009-09|2009-09 September 2009]
-| 67.25 % || 21.12 % ||  8.46 % ||  2.41 % ||  0.28 % || 0.21 % ||  (N/A)
+| 67.25 % || 21.12 % ||  2.41 % ||  8.46 % ||  0.28 % || 0.21 % ||  (N/A)
 |-
 !scope="row" style="text-align:right;font-weight:normal"| <span style="display:none">2009-08</span> [http://www.statowl.com/web_browser_market_share.php?1=1&&interval=month&chart_id=4&fltr_br=&fltr_os=&fltr_se=&fltr_cn=&timeframe=last_month&timeframe=custom|2009-08|2009-08 August 2009]
-| 68.37 % || 21.32 % ||  7.29 % ||  2.21 % ||  0.28 % || 0.23 % ||  (N/A)
+| 68.37 % || 21.32 % ||  2.21 % ||  7.29 % ||  0.28 % || 0.23 % ||  (N/A)
 |-
 !scope="row" style="text-align:right;font-weight:normal"| <span style="display:none">2009-07</span> [http://www.statowl.com/web_browser_market_share.php?1=1&&interval=month&chart_id=4&fltr_br=&fltr_os=&fltr_se=&fltr_cn=&timeframe=last_month&timeframe=custom|2009-07|2009-07 July 2009]
-| 69.29 % || 21.06 % ||  6.77 % ||  2.05 % ||  0.30 % || 0.24 % ||  (N/A)
+| 69.29 % || 21.06 % ||  2.05 % ||  6.77 % ||  0.30 % || 0.24 % ||  (N/A)
 |-
 !scope="row" style="text-align:right;font-weight:normal"| <span style="display:none">2009-06</span> [http://www.statowl.com/web_browser_market_share.php?1=1&&interval=month&chart_id=4&fltr_br=&fltr_os=&fltr_se=&fltr_cn=&timeframe=last_month&timeframe=custom|2009-06|2009-06 June 2009]
-| 71.44 % || 19.48 % ||  6.30 % ||  1.93 % ||  0.33 % || 0.22 % ||  (N/A)
+| 71.44 % || 19.48 % ||  1.93 % ||  6.30 % ||  0.33 % || 0.22 % ||  (N/A)
 |-
 !scope="row" style="text-align:right;font-weight:normal"| <span style="display:none">2009-05</span> [http://www.statowl.com/web_browser_market_share.php?1=1&&interval=month&chart_id=4&fltr_br=&fltr_os=&fltr_se=&fltr_cn=&timeframe=last_month&timeframe=custom|2009-05|2009-05 May 2009]
-| 71.35 % || 20.26 % ||  5.95 % ||  1.64 % ||  0.31 % || 0.21 % ||  (N/A)
+| 71.35 % || 20.26 % ||  1.64 % ||  5.95 % ||  0.31 % || 0.21 % ||  (N/A)
 |-
 !scope="row" style="text-align:right;font-weight:normal"| <span style="display:none">2009-04</span> [http://www.statowl.com/web_browser_market_share.php?1=1&&interval=month&chart_id=4&fltr_br=&fltr_os=&fltr_se=&fltr_cn=&timeframe=last_month&timeframe=custom|2009-04|2009-04 April 2009]
-| 71.38 % || 20.46 % ||  5.80 % ||  1.43 % ||  0.31 % || 0.19 % ||  (N/A)
+| 71.38 % || 20.46 % ||  1.43 % ||  5.80 % ||  0.31 % || 0.19 % ||  (N/A)
 |-
 !scope="row" style="text-align:right;font-weight:normal"| <span style="display:none">2009-03</span> [http://www.statowl.com/web_browser_market_share.php?1=1&&interval=month&chart_id=4&fltr_br=&fltr_os=&fltr_se=&fltr_cn=&timeframe=last_month&timeframe=custom|2009-03|2009-03 March 2009]
-| 72.03 % || 20.00 % ||  5.91 % ||  1.19 % ||  0.30 % || (N/A)  ||  0.10 %
+| 72.03 % || 20.00 % ||  1.19 % ||  5.91 % ||  0.30 % || (N/A)  ||  0.10 %
 |-
 !scope="row" style="text-align:right;font-weight:normal"| <span style="display:none">2009-02</span> [http://www.statowl.com/web_browser_market_share.php?1=1&&interval=month&chart_id=4&fltr_br=&fltr_os=&fltr_se=&fltr_cn=&timeframe=last_month&timeframe=custom|2009-02|2009-02 February 2009]
-| 74.04 % || 18.64 % ||  5.57 % ||  0.97 % ||  0.27 % || (N/A)  ||  0.10 %
+| 74.04 % || 18.64 % ||  0.97 % ||  5.57 % ||  0.27 % || (N/A)  ||  0.10 %
 |-
 !scope="row" style="text-align:right;font-weight:normal"| <span style="display:none">2009-01</span> [http://www.statowl.com/web_browser_market_share.php?1=1&&interval=month&chart_id=4&fltr_br=&fltr_os=&fltr_se=&fltr_cn=&timeframe=last_month&timeframe=custom|2009-01|2009-01 January 2009]
-| 73.05 % || 19.39 % ||  5.72 % ||  0.96 % ||  0.29 % || (N/A)  ||  0.12 %
+| 73.05 % || 19.39 % ||  0.96 % ||  5.72 % ||  0.29 % || (N/A)  ||  0.12 %
 |-
 !scope="row" style="text-align:right;font-weight:normal"| <span style="display:none">2008-12</span> [http://www.statowl.com/web_browser_market_share.php?1=1&&interval=month&chart_id=4&fltr_br=&fltr_os=&fltr_se=&fltr_cn=&timeframe=last_month&timeframe=custom|2008-12|2008-12 December 2008]
-| 70.89 % || 20.87 % ||  6.32 % ||  0.95 % ||  0.33 % || (N/A)  ||  0.13 %
+| 70.89 % || 20.87 % ||  0.95 % ||  6.32 % ||  0.33 % || (N/A)  ||  0.13 %
 |-
 !scope="row" style="text-align:right;font-weight:normal"| <span style="display:none">2008-11</span> [http://www.statowl.com/web_browser_market_share.php?1=1&&interval=month&chart_id=4&fltr_br=&fltr_os=&fltr_se=&fltr_cn=&timeframe=last_month&timeframe=custom|2008-11|2008-11 November 2008]
-| 72.07 % || 19.78 % ||  6.57 % ||  0.68 % ||  0.29 % || (N/A)  ||  0.13 %
+| 72.07 % || 19.78 % ||  0.68 % ||  6.57 % ||  0.29 % || (N/A)  ||  0.13 %
 |-
 !scope="row" style="text-align:right;font-weight:normal"| <span style="display:none">2008-10</span> [http://www.statowl.com/web_browser_market_share.php?1=1&&interval=month&chart_id=4&fltr_br=&fltr_os=&fltr_se=&fltr_cn=&timeframe=last_month&timeframe=custom|2008-10|2008-10 October 2008]
-| 73.45 % || 18.88 % ||  6.22 % ||  0.57 % ||  0.26 % || (N/A) ||  0.16 %
+| 73.45 % || 18.88 % ||  0.57 % ||  6.22 % ||  0.26 % || (N/A) ||  0.16 %
 |-
 !scope="row" style="text-align:right;font-weight:normal"| <span style="display:none">2008-09</span> [http://www.statowl.com/web_browser_market_share.php?1=1&&interval=month&chart_id=4&fltr_br=&fltr_os=&fltr_se=&fltr_cn=&timeframe=last_month&timeframe=custom|2008-09|2008-09 September 2008]
-| 74.53 % || 18.14 % ||  5.98 % ||  0.52 % ||  0.22 % || (N/A) ||  0.17 %
+| 74.53 % || 18.14 % ||  0.52 % ||  5.98 % ||  0.22 % || (N/A) ||  0.17 %
 |}