irssi

Irssi is a powerful modular text-mode chat client that runs in terminal environments. While it comes with built-in IRC support, its extensible architecture allows for third-party protocol modules including ICB, SILC, XMPP (Jabber), PSYC, and Quassel, making it a versatile communication hub for multiple chat networks.

The client is designed for power users and system administrators who prefer keyboard-driven interfaces and want extensive customization options. Irssi offers a rich ecosystem of themes and scripts that can dramatically extend its functionality, from advanced IRC features to integration with external services. Its text-based interface makes it ideal for use over SSH connections or on headless servers.

With comprehensive built-in help documentation and an active development community, Irssi caters to both newcomers learning IRC and experienced users who need advanced features like scripting support through Perl integration. The modular design ensures that users only load the protocols and features they actually need, keeping the client lightweight while remaining powerful.

Installation

# via Source (Development)
git clone https://github.com/irssi/irssi && cd irssi && meson Build && ninja -C Build && sudo ninja -C Build install

# via Source (Release)
tar xJf irssi-*.tar.xz && cd irssi-* && meson Build && ninja -C Build && sudo ninja -C Build install