Hai Messenger

Why Hai?
Free text, calling, photo messages and location-sharing with Hai users*
No registration, alias or invitations required
Instantly integrates with your own contact list
Best-quality mobile calls using 3G or Wi-Fi
Free text and picture sharing with anyone, anywhere!
Free text, calling, photo messages and location-sharing with Hai users*
No registration, alias or invitations required
Instantly integrates with your own contact list
Best-quality mobile calls using 3G or Wi-Fi
Hai is a good alternative in the wide range of instant messaging a  for Android. 
Once you install the app on your device, all you have to do is let it access your contact list, and in a matter of seconds you can start send message and Videos with pretty good audio quality and no expenses except the Internet service. It's better if this connection is WiFi or 3G, since using this app with a data plan can be more expensive than using the phone.