
Description: 4k YouTube to MP3 is a free web-based tool that allows you to convert and download YouTube videos as MP3 audio files. It supports extracting audio from YouTube videos up to 4K resolution.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: AnyTube Downloader is a free video downloader that allows users to download videos from YouTube, Facebook, Twitter, Vimeo and 1000+ other sites. It can download videos in HD, MP4, MP3 and other formats. AnyTube is completely free with no subscription fees or ads.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API