What are some alternatives?
When comparing Textual and Kopete, you can also consider the following products
irssi - Irssi is a terminal based IRC client for UNIX systems.
Trillian - Trillian is a decentralized and federated instant messaging platform that lets your whole company send private and group messages, keep tabs on what co-workers are doing, share files, and much more.
HexChat - HexChat is a fork of XChat with bug fixes and new features.
Miranda IM - Miranda IM is the smaller, faster, easier instant messenger with support for multiple protocols.
mIRC - mIRC: Internet Relay Chat client
Jitsi - Open-source video calling and chat platform.