
Description: Isotoxin is an open-source load and performance testing tool for web applications. It allows developers to simulate user traffic to measure system load, identify bottlenecks, and ensure scalability. Key features include record and playback of user journeys, custom scripting, distributed testing, and detailed reporting.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Empathy is an open source instant messaging client that supports text, voice and video chat. It uses the Telepathy framework and integrates with the GNOME desktop environment. Empathy supports popular protocols like XMPP, IRC, Facebook Messenger, and more.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API