
Description: Eventlet is a concurrent networking library for Python that allows developers to easily write highly scalable servers. It uses green threads to provide asynchronous I/O without having to deal with callback functions or program complexity.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Greenlet is a lightweight concurrency library for Python that allows users to switch between several green threads (coroutines) in a similar way to yield statements. It enables non-blocking cooperative multitasking in Python programs.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API