from Information Research, Vol. 10 No. 4, July, 2005
In case you don't know what is GreaseMonkey:
Greasemonkey is a Firefox extension which lets you to add bits of DHTML ("user scripts") to any Web page to change its behavior.
Here, the article listed some efforts to make the same functions available to the other browsers, in case you still have not switched over to Firefox.
Two scripting extensions have just been introduced for Internet Explorer: Trixie and Turnabout. The Opera browser supports user scripts, and Apple's Safari browser has a plugin called PithHelmet.
I have not checked them out and am wondering if the scripts are inter-changeable with GreaseMonkey.