Whatsapp is a free instant messaging service that allows you to send messages to your friends via the Internet, these messages can be text, image or video. The application is available for almost all platforms in the market, including iPhone, Android, Blackberry and Windows Phone and you can download it directly to your mobile device from the corresponding Store.

Whatsapp is the most successful application you can use for instant messaging and voice calls. The fact that Whatsapp is a cross platform and can be used from a computer.

Some features:

Multimedia:
Send and receive Video, Image and Voice Memo. The application is really useful, as it allows you to send or receive pictures, video and audio files besides text messages.

Group chat:
Enjoy your group talk with your contacts so you can stay in touch with your friends and family easily.

Whatsapp Web:
You can also receive and send the WhatsApp message from your computer's browser. Available for Windows Phone 8+.

Offline messages:
If you missed notifications or your phone is turned off, WhatsApp keeps these last messages until the next time you use the application.

Whatsapp states:
Whatsapp has collected some of Whatsapp love situations, Whatsapp English situations, Funny WhatsApp situations you can write in the status part of the Whatsapp application, and put them together.

And much more:
Share your location, send and receive contact information, set a custom background and set alert tones, email your chat history, post a mass message to many people at once, and more.