imo instant messenger for iPhone - imo is a multiprotocol instant messenger which allows you to easily keep in touch with all your friends. It supports Facebook Chat, Google Talk, Skype, Windows Live Messenger (MSN), ICQ/AIM, Yahoo Messenger, Jabber, Myspace, Vkontakte.ru, Hyves, and Steam
BeejiveIM for Jabber (iPhone) - BeejiveIM is a reliable and user-friendly mobile IM application for your mobile device, featuring desktop-like instant messaging and always-on efficient networking.
BeejiveIM for Jabber lets you chat on Jabber chat network anytime, anywhere with the proven reliability of BeejiveIM.
· Be connected even after you close the application
Maaii for iPhone - Maaii is a free mobile communications app that combines voice calls, instant messaging and social network integration. Maaii users can register with their mobile number and make free calls to other Maaii users, or call mobile and landline numbers worldwide with MaaiiOut
WeChat for iPhone is a cross-platform voice and text chatting app, with friend-discovery social features and shared streaming photo feeds from friends' personal photo albums
Roulette Chat - Roulette Chat lets you meet random people and chat with them. Every time you run the app, you will be paired with a completely random stranger
TEDtalks for HanDBase - includes links to watch individual TEDTalks. TEDTalks features the world's most fascinating thinkers and doers, who are challenged to give the talk of their lives (in 18 minutes). This site makes the best talks and performances from TED and partners available to the world, for free
SimSimi for iPhone - SimSimi is an advanced chat bot for iPhone. The app uses the collective knowledge of millions of users worldwide to provide you with a life-like chat experience.
To use the application, simply type in your messages via the chat box and SimSimi will respond. SimSimi uses an ever-growing vocabulary, learning words from you as well as from other users
FriendCaller 3 Pro - Make free worldwide calls over Voice over IP or use text messages. FriendCaller to FriendCaller calls are absolutely easy and free. Just use your Facebook ID or email address to talk to all your friends instantly. There is no need to register for them
Nimbuzz is free mobile calls, instant messaging and more with friends on Nimbuzz and on Facebook, MSN/Windows Live Messenger, Yahoo! Messenger, Google Talk, AIM/ AOL Instant Messenger, MySpace, ICQ, and more!