AdWords Editor - All of the Google tools listed above are online tools. Google's AdWords Editor is an offline tool used for managing your whole Adwords account offline. It can save you hours of time if you want to do things like duplicating campaign, copying and pasting ad groups or keywords, and bulk editing many keywords, ad groups, or campaigns at once.
You can also use it as an offline sandbox to play around with new Google ads that you're thinking of. Sometimes you think of a great ad and then you wonder if it will fit properly into the Google Ad format: 25 characters in the headline, 35 in description line 1, 35 in description line 2, and 35 in the display URL. With Adwords Editor you just type it in and the text turns red if it's too long. Plus, it doesn't cut off the text like the online Google Ad builder, so you can just edit it until it fits.
