qutIM is free and open-source multiprotocol (ICQ, Jabber, Mail.Ru, IRC, VKontakte) instant messenger. Developed by Rustam Chakin & Ruslan Nigmatullin
License: Open Source
qutIM is primarily a messaging app that excels in supporting multiple protocols and providing a customizable interface, while Jitsi is a robust video conferencing tool with high-quality audio and video capabilities, making it more suitable for virtual meetings and group conversations.