Whatapp has extended its services to online now and you can chat with friends on your Chrome browser in your PC.
Here how to enjoy it:
1. Update you WhatsApp messenger on your phone.
2. Tap Menu >>> WhatsApp Web in the menu list
4. You can now whatsapp all your contacts right in your Chrome browser on your PC
The new Web client is actually a simple mirror from the WhatsApp app on
your phone, so in order to use it, you’ll need to have an active
connection on your phone, not just your computer.
And sorry iOS users you have to wait for a while.