Miranda IM

Miranda IM is a communication and Instant Messaging application, supporting a variety of protocols, which is designed for 32-bit versions of Windows. It is open source and free software. Because it uses little operating memory, it runs fast even on older PCs. Its philosophy is to unpack and use - which is advantageous, for example, on computers where the user does not have rights to install programs or wants to keep his chat with him at all times, e.g. on a USB flash drive (even on a regular floppy disk if not many plug-ins are used).

Compared to its competitors, it has the advantage of being very easy to use, clear, easy to install and it doesn't show any advertising windows or banners, so it doesn't disturb anything when chatting.

English can be found here: http://addons.miranda-im.org.
Installation is very easy. Copy the file "langpack_czech.txt" to the same directory where Miranda is located (miranda32.exe, usually C:Program FilesMiranda). Then just quit and restart Miranda. That's all.

New version:

• Smaller, faster, simpler Instant Messenger with support for multiple protocols
• supports AIM, Facebook, Gadu-Gadu, Jabber, ICQ, IRC, MSN, Yahoo and more
• new language pack
• Yahoo - added conferencing support, Msn - added Windows Phone detection, ...
• bug fixes.