
Description: wrk is an open-source HTTP benchmarking tool and load testing application. It is used to measure web server performance by simulating concurrent connections to the target server. wrk is lightweight, scalable, and can generate significant load even when run on a single multi-core CPU.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Siege is an open source load testing and benchmarking utility for web applications. It allows developers to put load on a web server to test application stability and performance under heavy load.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API