Greasemetal is a userscript runtime for Google Chrome. The runtime hosts userscripts (tiny javascript files that modify the webpages being displayed) to be executed on Google Chrome, similar to what Greasemonkey does for Mozilla Firefox, or Greasekit does for Safari.
Google Chrome does not provide any interface to develop browser addons. Greasemetal modifies the behaviour of Google Chrome using an inter-process communication channel called AutomationProxy, which is used for automatically testing the functions of the web browser.
Once you have started running Greasemetal, add userscripts to the userjs directory under your My Documents folder (or Documents folder on Windows Visa). If you are unfamiliar with userscripts, a number of scripts are available from userscripts.org.
简单的给大家介绍下这东西是干什么的，Greasemetal类似于Greasemonkey ，不过是专门用于google chrome的，它能在启动chrome同时运行很多用户自定义的userscript。我们可以在userscripts.org找到很多实用的scritps。
如何使用，大家先必须先安装chrome，Greasemetal默认只启动安装版路径的chrome，如果你用了绿色版，请拷贝到原先默认的chrome安装路径。然后下载Greasemeta，安装后会运行，同时启动chrome。
用户自定义的userscripts拷贝到用户文档的userj目录下,Greasemeta启动chrome是就能自动发现并运行了。