Photo credit: Kuklev

1. BeeNut: Multi-protocol instant messenger for Windows allows you to connect to all major IM networks
2. Scriblink: Online witheboarding tool lets you collaborate online with your team in real-time
3. Communication Tube Free web-based instant messaging client supports ICQ, MSN Messenger, IRC and Google Talk
4. Aeromessenger: Free Java-based mobile instant messenger allows you to communicate with people from anywhere

1. BeeNut
   
   BeeNutis a multi-protocol instant messenger for Windows platform. It is compatible with MSN Messenger, Yahoo Messenger, AOL Instant Messenger, ICQ, and QQ. Its main features are file transfer, advanced contact list sorting, all-in-one chat window, invisible talking, typing indicator and more. It is completely free to download and use.
   http://www.beenut.com/





2. Scriblink
   
   Scriblink is an online whiteboarding tool that anyone can use to collaborate online. Without any registration, you can create whiteboards and invite people to draw with you by clicking the invite button: you can then choose whether to get a URL or provide your friends' email addresses. Other features are a real-time text-chat, color selector, undo, save and print options, and more. 100% web-based and free.
   http://www.scriblink.com/





3. Communication Tube
   
   Communication Tube is a free web-based instant messaging client which currently supports ICQ, MSN Messenger, IRC and Google Talk. When you connect to multiple IM services, Communication Tube will mix all your contact lists in one, sorting contacts basing on their status (online/offline). All you need is a web-browser and an internet connection. Free to use
   http://www.communicationtube.com/





4. Aeromessenger
   
   Aeromessenger is a free mobile instant messenger that works on Java-enabled phones, and it enables you to communicate with your friends from anywhere. You can add contacts from your phonebook, send messages, create conferences, browse the message history, and also create a to-do list within the messenger interface. Free to use, registration required.
   http://www.aeromessenger.co.za/