Handle is a useful Chrome extension to the fantastic iOS app of the same name that helps you manage your life when you're at your desk.

The excellent feature set is the same: add to-dos really quickly and easily; manage your email (Gmail only) by turning them into tasks and adding reminders; and access your calendars and events. By signing in with Dropbox, Handle will sync data across the mobile and web apps.

Its ease of use, useful features, and attractive UI make Handle a must for busy people.