qutIM is free and open-source multiprotocol (ICQ, Jabber, Mail.Ru, IRC, VKontakte) instant messenger. Developed by Rustam Chakin & Ruslan Nigmatullin
License: Open Source
Franz is a more feature-rich communication app that supports a wide range of messaging services and productivity tools, making it ideal for users who need a comprehensive solution. On the other hand, qutIM is a lightweight, open-source alternative that focuses on providing a simple and efficient messaging experience with support for multiple protocols.