webkit css support which browsers?

Wikipedia has a summary of what browsers use WebKit as their HTML rendering engine. The WebKit Project itself has even an more complete list.

I'm not being sarcastic here, but most likely any web browser based on web kit. Aside from Safari, there is Google's Chrome that is based on webkit, so they would probably support these too.

If you take a look at the engines the most popular browsers use, as detailed in this question:

• Firefox and other Mozilla browsers (IceWeasel, etc) use Gecko.
• Internet Explorer uses Trident.
• Safari, Google Chrome and Konqueror use Webkit.
• Opera 9+ uses Presto.

So no, neither Internet Explorer, nor Firefox or Opera supports the webkit CSS styles (although of course Firefox have their own extensions which are similar).

Any browsers using Webkit should support the CSS webkit prefixed CSS styles.