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+ offers a user-friendly experience with support for various messaging protocols and a customizable interface, making it suitable for casual users. In contrast, Pidgin is an open-source client favored by tech-savvy users for its robust security features and plugin support, although it may have a steeper learning curve.