
Description: Sim-IM is an open source instant messaging client for Windows that supports multiple protocols including XMPP/Jabber, IRC, Telegram, and Twitter. It offers a customizable interface, plugins, group chats, encryption, and other standard chat features.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: CenterIM is a free and open-source instant messaging software for Windows. It supports multiple protocols including Yahoo, MSN, ICQ, AIM, IRC and more. Easy to use interface to chat online.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API