Besides being a chat client XtreMePP is designed for integration with other applications like LedEffects. Incoming messages are broadcasted so that other apps can react on incoming messages. XtreMePP is an open client and of course is open source
AndroidChat is a location aware chat client for the Android platform.
More technically, the project consists of modifications to the inspircd irc daemon to support location-awareness services, and a client for Google's Android platform which supports location based channel matching
IM+ keeps you connected all-in-one to Google Talk, Yahoo, MSN/Live Messenger, AIM/iChat, ICQ, MySpace, Jabber, Facebook and Skype chat.
· Communicate with your friends in a single buddy list. No pre-registration required!
· You may have multiple conversations at the same time and use multiple accounts of the same service
msg - send and receive unlimited short messages for free.
· Saves You Money. Instead of texting, just msg your family and friends - it's unlimited and it's FREE!
· Message Threads: Entire conversation is shown when reading and replying to a message.
· Group Messaging: Send a message to a group of people easily
TiKl - Touch to Talk - Instantly talk to one or a group of friends at once with the touch of a button. No setup needed, just have them in your phone contacts or as Facebook friends. Fast, simple and free - TiKL turns your phone into the ultimate Push To Talk (PTT) Walkie Talkie. No voice plan or SMS used for calls. Works on WiFi and cellular
IMPlusSymbian OS, Series 60, BlackBerry, Android, iPhone, iPad, iPod Touch, Apple iPhone OS, JavaVersion: 8.6.1 Upload date: 18 Dec 10 Tags: Internet & Communications
Freeware
IMPlus Chat with award-winning IM+® within AIM®/iChat, MSN®/Windows Live™ Messenger, Yahoo!®, ICQ®, Jabber®, Google Talk™, MySpaceIM, Facebook® and even Skype™* regardless of location and mobile operator
