Psi is a cross-platform powerful XMPP/Jabber client (Qt, C++) designed for the Jabber power users. Psi+ is a development branch of Psi IM XMPP/Jabber client. Developed by http://psi-plus.com/
License: Open Source
Psi+ offers a more user-friendly experience with advanced security features, making it suitable for users prioritizing ease of use and security. In contrast, Psi is highly customizable and supports multiple platforms, making it ideal for power users who want flexibility and strong community support.