Rijk van Geijtenbeek has created a very nice page at http://my.opera.com/Rijk/homes/blog/extensions.html. It’s a table that takes the top 150 Firefox Extensions and compares their functionality with Opera 9. Each entry is color coded; either out-of-the-box functionality in Opera 9, available add-on/widget for Opera, very limited functionality or extensive customizing required, or functionality not available.
Don’t get me wrong; a lot of the Firefox extensions have a “Functionality Not Available” in Opera 9. On the other hand I was pleased to see how much functionality WAS available; Opera’s come a long way. I also learned a lot from the listings; where functionality is available in Opera the extension listing explains how it’s done.
I wonder how IE would look stacked up against Firefox and 150 extensions?