I came across an interesting report of web technology penetration rates, dated 1 April 2006, by SecuritySpace. It's based on a sample of 1,358,991 web sites in 2006, so it's a pretty significant study. The following table shows the penetration rates of a variety of client side web technologies, for the years 2002, 2005 and 2006:
|Technology||2002 %||2005 %||2006 %||2006 Sites|
I was a little surprised that Flash is only 12-13% penetration - although it has increased from 8-9% a year ago. On the other hand, Java seems to be dying a slow death, down to just 1.64% penetration.
Of the image formats, GIF is still going strong, but expect to see the PNG figure rise over the next few years. I use PNG for most of my web images these days, because I find the quality to be better.
Interesting also to see that nearly 16% of all websites still use frames! I guess Web 2.0 hasn't quite made it onto those sites yet :-)