qutIM is free and open-source multiprotocol (ICQ, Jabber, Mail.Ru, IRC, VKontakte) instant messenger. Developed by Rustam Chakin & Ruslan Nigmatullin
License: Open Source
Pidgin is a versatile and feature-rich instant messaging client that supports numerous protocols and is highly customizable, making it suitable for power users. In contrast, qutIM is a lightweight alternative focused on simplicity and speed, making it ideal for users who prefer a straightforward messaging experience.