
Description: Instantbird is an open-source instant messaging client that supports popular chat protocols like XMPP/Jabber, IRC, Twitter and Facebook Chat. It is based on Mozilla technology and aims to be a lightweight and customizable alternative to larger IM clients.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Meebo was a free web-based instant messaging client that allowed users to access multiple IM accounts and networks in one interface. It supported popular platforms like AOL Instant Messenger, Yahoo! Messenger, MSN Messenger, and others. Meebo officially closed in 2012 after being acquired by Google.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API