
Description: Trillian is an instant messaging application that supports multiple protocols in one interface, including AIM, ICQ, MSN, Yahoo Messenger, and more. It allows connecting to multiple chat networks at once from a single app.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Pidgin is a popular open source chat client that supports multiple chat protocols including IRC, XMPP, Bonjour, and more. The MacOSX version provides a native interface for Mac users. It's lightweight, customizable, and encrypts chats for privacy.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API