The major difference is that Microsoft wasn't actively working with the various web standards groups to standardize its various proprietary features. The majori

The major difference is that Microsoft wasn't actively working with the various web standards groups to standardize its various proprietary features. The majority of the non-standard functionality that's added to WebKit and Gecko is done with the intent of moving it on to the standards track if it is beneficial to the web platform. Edit: If you can't see any difference between the approach to standards taken by Microsoft with IE 6 and by the people involved with WebKit, I'd suggest reevaulating your own biases.