
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: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Drone.io is a continuous delivery platform built on Docker, allowing developers to build and deploy code to any environment. It uses a simple YAML configuration file to define pipelines and works with most source code repositories like GitHub and BitBucket.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API