Tango Voice & Video (Android, i Phone) Tango allows you to make free phone calls and free video calls over 3G, 4G, and Wi-Fi.
Make calls to any other person who has Tango installed on their phone anywhere in the world for free.
imo instant messenger (Android, i Phone) Stay in touch with your friends across several IM accounts without signing up for a new account.
Over 22 Million people world-wide already use oo Voo for video chat and voice calls on mobile and the computer. Call oo Voo contacts mobile to mobile, or mobile to computer.ONLY SUPPORTED ON: HTC Evo 3G & 4G, Samsung Epic, Samsung Galaxy S GT-i9000, Samsung Galaxy Tab 3.0, and T-Mobile My Touch 4G, Dell Streak 5, Nexus S and Galaxy S 4G.Whats App Messenger provides i Phone users with the familiar look-and-feel of desktop instant messaging programs, right on their i Phone.Key features: no monthly fees, no international charges, no PINs or usernames, no login / logout, push notifications.Feature to add friends with their IDs as well as with their phone numbers fring (Android, i Phone) fring is a multi-award winning mobile application that lets you make free voice calls, free video calls (one way) and live IM chats directly from your i Phone and i Pod touch. Communicate with your friends from fring and other favorite social services including Skype, MSN®Messenger, Google Talk, Twitter, Yahoo!
, AIM, ICQ, all through one central profile, using your i Phone and i Pod touch’s internet capability.No problem, make the call with Viber and if they don’t have Viber the call will be made using your regular phone IM (Android) Chat with IM All-in-One instant messenger on Skype, Facebook, AIM, MSN, Yahoo!, ICQ, Jabber, Google Talk and My Space IM in real-time.With the announced mega-acquisition of Skype by Microsoft, the world of Vo IP, group messaging, and chat apps has been brought into focus.Aside from Skype, which is the uncontested king of the category, there are a bunch of other great apps that can also do chat, group messaging, and video or voice calling.No cost per message, IM doesn’t use SMS to send messages.