
Description: CircleCI is a continuous integration and delivery platform that helps developers automate building, testing, and deploying applications. It offers cloud-based infrastructure for running jobs in Linux containers along with insights through analytics and monitoring.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Jenkins is an open source automation server that enables developers around the world to reliably build, test, and deploy their software. It provides hundreds of plugins to support building, deploying, and automating any project.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API