Hudson Extension for Google Chrome
This extension monitors Hudson, a continuous integration server. For more information about Hudson take a look at: http://hudson-ci.org/
The options of this extension allows you to set the URL of your Hudson. By default it will check the status of the Hudson instance used for Hudson itself at http://ci.hudson-labs.org/
The button of this extension will show a green "OK" if the builds succeeds, if the build fails the button shows a red "Fail". A click on the button will show you the status of your jobs and the time of the last update.
You can get the source for this extension and file bugs or feature requests at github: http://github.com/sanitz/hudson-chrome-extension
You can install the extension at the offical Google Extension site.