
Description: CodeSignal is an online platform that helps tech professionals prepare for coding interviews through practice assessments and programming challenges. It offers features like coding challenges, skill assessment tests, and mock interviews.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: coderpad.io is an online code editor and interview platform designed for technical interviews and remote pair programming. It allows multiple users to collaborate on coding challenges in real-time with features like video chat, text chat, and shared editing.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API