What sets apart Google Toolbar, Google Desktop, Google Earth, Picasa, Google Talk, Google Deskbar from other software?Most of the time, a Google software:
* it's free
* it self-updates
* it updates fast
* it has a small installer (maybe except Google Earth)
* it asks you to set Google as default search in Internet Explorer
* it doesn't have a local help
* lately it asks you to sign in to your Google Account to get more options
* it has a search box
* it does one thing (maybe except Google Desktop)
* it's simple to use
* most of the time, you'll find it in beta