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

Miranda NG: Next Generation of Miranda IM

Open-source instant messaging server that makes classic AIM and ICQ clients work again.

Bot API for Python

Golang library for Bot API

🍊 Android mobile IM client

Set of PHP tools for simple and clear work with ICQ(OSCAR) protocol

JIMM Mobile Messaging (archived)

Ace IM internet messenger (Android)

Go lang lib for ICQ BOT API

PHP ICQ bot api

ICQ protocol implementation for libpurple. Written in Rust.

ICQ New bot framework with ease-to-use interface to quickly create bots

ICQ New Bot SDK for Node.js

The plugin allows to send Jenkins notifications to ICQ

ICQ alerts gateway

Асинхронная библиотека Python для bot API

.Net Client for the ICQ New Bot APIs