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How accurate are the online mapping assessments on online mapping pie chart

Can ArcGIS really be only .33% ? If so, what does this say about ArcGIS.

Also why aren't QGIS Server, GeoServer, or MapServer listed ?

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closed as primarily opinion-based by PolyGeo Oct 16 '15 at 19:38

Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise.If this question can be reworded to fit the rules in the help center, please edit the question.

You are misunderstanding what is being measured!

This graph seems to look at what web mapping javascript APIs are used on web pages, and it makes sense that things like QGIS or Mapserver are not counted, because they are not javascript mapping libraries!

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