Download Pushbullet for Chrome & instantly have the ability to have your messages & notifications sent to your phone or PC. You can even send files, documents & photos to multiple devices, free.
Install Telegram for Chrome and be able to instantly send videos, sounds and chat online for free.
Download ooVoo for Chrome or Chromebook for free video calling, chat and voice to rival Skype.
Get Line for Chrome & experience one of the best WhatsApp alternatives available, Line Messenger lets you make phone & video calls on your Chromebook.
Get Viper for Chrome and instantly make phone & video calls on your Chromebook just as if you are using WhatsApp or Skype.