
Description: GoCD is an open source continuous delivery server that helps automate the software release workflow. It provides visibility into builds, deployments, and testing environments to help teams release software faster and more reliably.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Screwdriver is a lightweight open source continuous delivery and release automation platform. It helps developers easily build, test, and deploy their code and facilitates faster and simpler delivery of apps and services.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API