AdWords Editor is Google’s free, downloadable account management application for your computer. Download your AdWords account to your computer, make your changes, then upload your revised campaigns. Benefits and features include:

• Navigate your account quickly and easily
• Make bulk changes to keywords and ad text
• Work offline, then upload your changes
• Copy and paste keywords and ad text
• Circulate proposed changes and get feedback

Download : http://dl.google.com/adwords_editor/4.0.0/win32/en-US/adwords_editor_en-US.msi