Chrome: Blank Canvas is a user script manager for Google Chrome that makes Greasemonkey scripts more compatible with Chrome while also providing a nice interface for managing those user scripts.
The Greasemonkey Firefox extension will always be one of our favourite Firefox extensions, but as some users make the move to Chrome, some Greasemonkey scripts don't quite work as they should. Chrome does, in fact, support user scripts out of the box (if you try installing a user script in Chrome, it simply installs as an extension), but Greasemonkey has several special functions that are designed specifically for the Greasemonkey extension. Blank Canvas enables several of those functions (expect better support over time), so even scripts that are very Greasemonkey-specific have a chance of running like a charm on Chrome.
As an added bonus, the tool features a script manager from which you can enable and disable scripts, tweak the sites it's enabled for, and edit or delete the script.