Talking on your cell phone at work can look pretty unprofessional and not everyone you need to talk to uses Google Hangouts. The solution? Make a phone call directly from Gmail.
Not many people realize that Gmail can call up cell phones and landlines free of charge*. You can save your minutes and make your work calls without ever leaving your computer. This feature is great for ringing up those who do not use Google Apps or are not near a computer.
*Calls are only free in the US and Canada.