Licq is an instant messaging client daemon that supports a number of interfaces via plug-ins, currently KDE or Qt, and several utility plug-ins.

Support for different instant messaging networks, such as ICQ, AIM, MSN and Jabber, is available as separate plug-ins.

Implemented features include messaging, chat, file transfer, whitepages, history, invisible list, server-side stored contacts, typing notification, phone book, user pictures, proxy support, user groups, network monitor window, themed docking skin and icon pack support, FIFO support for remote control, international support with Unicode and translations, per-user customized auto responses, SSL secure client to client connections and GPG encrypted messages.

At least one plug-in is required for Licq to function. The plug-ins are distributed in separate packages named "licq-plugin-*".