
Description: 4K Download Online is a free online video and audio downloader that supports downloading from YouTube, Facebook, Vimeo and other popular sites. It allows downloading videos and audio in high quality formats up to 4K resolution.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: youtube-dl is a command-line program that allows downloading videos from YouTube and many other sites. It offers options to download entire playlists and channels and supports various formats.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API