IM+ supports simultaneously major IM services, including Google Talk, Twitter DMs, Yahoo!, AIM/iChat, ICQ, Jabber (and Slack through Jabber), etc. Developed by SHAPE Services
License: Freemium
IM+ is a versatile messaging app with strong mobile support and a user-friendly interface, making it ideal for users who need to communicate on the go. In contrast, qutIM is an open-source solution tailored for desktop users, particularly on Linux, offering a lightweight and customizable experience.