Tampermonkey is the most popular userscript manager for Google Chrome. It can manage and edit all your userscripts, enable and disable your scripts with 2 clicks, and search scripts from userscripts.org by URL. It also has full unsafeWindow access and a lot of tags supported by Greasemonkey and Scriptish.
What's new in version 3.3.3487
ReleaseAugust 13, 2013
Date AddedAugust 13, 2013
Operating SystemsWindows 2003, Windows Vista, Windows, Windows 7, Windows XP