Buzzooka is a Google Buzz client for the iPhone. It provides many features that you can't find on the official web interface of Google Buzz along with a slicker and faster interface taking advantage of the native iOS components
Twinkle Premium is the first and most famous social networking application for the iPhone and iPod touch. Hundreds of thousands of people have sent more than 30m messages on the application since its launch. Friends have been reunited, new friendships have been formed and there have even been relationships started over Twinkle
Colloquy is a full featured IRC client for iPhone, iPod touch, and iPad. It is built built atop the powerful Chat Core framework, same as its popular Mac OS counterpart. Colloquy for iOS is optimized for mobile use and supports multitasking, push notifications, and more.
· Convenient nickname, emoticon, IRC commands completion popups
Hello! Messenger for iPhone - Hello! is a cross-platform instant messenger. It lets you chat with all your friends anytime, anywhere, reducing expensive SMS fees. Besides messaging, Hello! includes many other useful features, such as group chat, message delivery confirmation, landscape chat, photo exchange, Facebook status updates, push notifications, and many more
Tapatalk is the top forum application that allows you to connect to thousands of internet forums with ability to access private messages and upload images.
Get a fast, cost-efficient forum browsing experience using the app built-in data compression to save data and increase speed
Trillian for iPhone helps you organize and stay in touch with your IM and social friends while on-the-go. Receive instant push notifications, send pictures and messages, and optionally synchronize with Trillian for Mac, Windows, and Web
Remodium is an app which allows you to control the Adium instant messenger running on your Mac from your iPhone, iPod Touch, or iPad. With it, you can view existing chats, resume existing chats, or start new ones.
Using Adium, you only need to sign into your chat services once. All of your groups, contact aliases and meta-contacts will appear normally
eBuddy Pro for iPhone - The best chat experience for AIM, MSN / Windows Live Messenger, Yahoo, Facebook Chat, GTalk, MySpace, Hyves and ICQ – all in one buddy list!
eBuddy for iPhone and iPod Touch is one of the most popular IM apps in the world.
THEMES
Personalize your chat experience with colorful high quality themes
BeejiveIM stay connected to all your instant messaging buddies anywhere you go! BeejiveIM keeps you in touch with your friends on AIM/MobileMe, MSN/Windows Live, Yahoo!, GoogleTalk, Facebook, MySpace and Jabber... all at the same time, all on your iPhone or iPod Touch.
Beejive's reliable and efficient networking has been tested and proven on multiple platforms
IM+ Pro will keep you connected all-in-one to Twitter, Skype Chat, Facebook, Google Talk, Yahoo, MSN/Live Messenger, AIM/iChat, ICQ, MySpace and Jabber.
You will stay connected even when you close IM+; you'll be notified about new IM in all supported networks via Apple Push Notifications