qutIM is free and open-source multiprotocol (ICQ, Jabber, Mail.Ru, IRC, VKontakte) instant messenger. Developed by Rustam Chakin & Ruslan Nigmatullin
License: Open Source
Kopete is a versatile instant messaging client with strong KDE integration and support for multiple protocols, making it suitable for KDE users. In contrast, qutIM is a lightweight and fast multi-protocol client that prioritizes ease of use and cross-platform compatibility, catering to users looking for a straightforward messaging solution.