Self-hostable software: IRC Communication (11)

The Lounge is a modern web-based IRC client designed for self-hosting.

WeeChat is a fast, lightweight, highly customizable chat client with modular plugins and script-based extensibility.

Ergo is a modern IRC server written in Go with integrated services, bouncer functionality, and IRCv3 support.

ZNC is an advanced IRC bouncer that sits between IRC clients and networks to buffer traffic and keep users connected.

InspIRCd is a modular C++ Internet Relay Chat (IRC) server for UNIX-like and Windows systems.

Kiwi IRC is a web-based IRC client that runs as static files and supports multiple IRC connections, themes, and plugins.

A web frontend for the WeeChat IRC client with modern browser-based access and added media embedding features.

A modern, cross-platform distributed IRC client with a central core that clients can attach to and detach from.

ngIRCd is a lightweight Internet Relay Chat server for small or private networks.

An open source IRC server with strong modularity, security, and extensive configuration options.

A project with documentation available at robustirc.net/docs.