Jitsi is an audio/video and chat communicator that supports protocols such as SIP, XMPP/Jabber, IRC and many other useful features.

Yaaic (Yet Another Android IRC Client) is as the name already says an Internet Relay Chat (IRC) client for Android devices.

IRCCloud Android App

A JVM library for all Twitch APIs, including Chat, Helix, and EventSub (webhook/websocket/conduit). It includes advanced features for large-scale apps such as connection pooling, rate-limiting, and more!

A modern Android IRC client. #revolutionirc on Libera.chat

An IRC client library in Java

Jenkins pipeline steps for integration with Hubot.

Small, basic library for communication via the Twitch chat. Java 8 compatible

Twitch Bot Development made Easier | DEPRECATED

Simple Bluetooth Java client based on the Bluecove library.

A modular IRC bot made in Java

Java IRC Server that aims to adhere to the RFC 2812 standard.

Cross-platform IRC client written in Java

Advanced IRC Bot in Java with tons of Features

Extensible XMPP/Matrix/IRC bot written in Java.

The bot that is not!

urChat is a Java based IRC Client designed around simplicity and minimal resource impact on your system.

Use at your own risk.

NewsBotIRC - Java IRC Bot with RSS feed reader

Atom is multi-purpose bot which operates across Discord, IRC, and Telegram. It provides MinecraftOnline commands and also various private features.