Whatsapp alternatives

Did you like the news that Facebook has just acquired whatsapp? 
Here is a list of some Whatsapp alternatives...

Snapchat
http://www.snapchat.com/


Hike
http://get.hike.in/
Relatively new but it deserves a chance.

Threema
https://threema.ch/en/
Secure messaging.

BBM
http://us.blackberry.com/bbm.html
A quite popular service from BlackBerry

Skype
http://www.skype.com
Okay that was quite easy to mention....


WeChat
http://www.wechat.com/en/
Registration similar to whatsapp. Very popular in China.

Kakao Talk
http://www.kakao.com/talk/en
Registration via mobile phone.

Nimbuzz
http://www.nimbuzz.com/en/


Google Hangouts
http://www.google.com/+/learnmore/hangouts/
Previously known as Talk. From Google.

chatOn
https://web.samsungchaton.com/
Created by Samsung but available for all the major platforms.

Kik Messenger
http://kik.com/
Registration via email.

Viber
http://www.viber.com

Groupme
https://groupme.com/
For group communications.