Pidgin has an expansive plug-in ecosystem. Please un-remove it (add it back) as an alternative
Google Talk [ now Hangouts ]
and by extension
the same claims apply to miranda
Jitsi provides audio chat SIP/Jingle, and text chat XMPP, SIMPLE
Jitsi with 35 votes ought not be buried under show all.
[Edited by Venom88, November 12]