[higherpurpose]

I'm actually surprised at how low the IE number is - for government websites. Obviously you can't compare it to the traffic on HN or Techcrunch, where like 70 percent must be on Chrome and 5 percent on IE, but seeing how some analystics sites still put IE at 50 percent market share, I think that's quite impressive.

Or NetApps' market share numbers are crap, and StatCounter's (and others') numbers are a lot closer to reality - which is that Chrome dominates the web browser market.

https://en.wikipedia.org/wiki/Usage_share_of_web_browsers

[Hovertruck]

I slapped this together recently using Chartbeat's realtime data (so the sources are major sites – nytimes.com, foxnews.com, espn, etc): http://percentoftheinternet.com

http://percentoftheinternet.com/windows http://percentoftheinternet.com/chrome http://percentoftheinternet.com/ie

...etc...

Raw data is here: https://api.chartbeat.com/cbtotal/?v=2

[acdha]

NetApps numbers appear to be based on a small number of corporate sites, which are skewed towards US media companies. They weight the numbers by the CIA World Factbook data for internet usage in a country but they've never given a reason to believe this approach doesn't exaggerate the distortions present in their sample of data.

If you want reliable numbers, nothing beats direct measurement for a comparable site. I've never worked on a site where traffic was anywhere near NetApps’ but I've found Akamai’s numbers to be reasonably close for sites which target a general audience:

http://www.akamai.com/html/io/io_dataset_v2.html